Price: $69.99

CTEK MULTI US 3300 12-Volt Universal Battery Charger w/ Pulse Maintenance

Item # CTEK56158

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Retail:$74.99

Our Price: $69.99

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ctek power inc battery chargers  4-step charger multi us 3300 12-volt universal w/ pulse maintenance
ctek power inc battery chargers charger multi us 3300 12-volt universal w/ pulse maintenance
ctek power inc battery chargers charges and maintains charge ctek56158
ctek power inc battery chargers charges and maintains charge
ctek power inc battery chargers charger 4-step
ctek power inc battery chargers charger ctek56158
ctek power inc battery chargers charger multi us 3300 12-volt universal w/ pulse maintenance
ctek power inc battery chargers charges and maintains charge ctek56158
ctek power inc battery chargers charges and maintains charge dimensions
ctek power inc battery chargers charger 4-step dimensions
ctek power inc battery chargers charges and maintains charge 4-step charger ctek56158
ctek power inc battery chargers 4-step charger ctek56158
ctek power inc battery chargers charger 4-step multi us 3300 12-volt universal w/ pulse maintenance
ctek power inc battery chargers charger charges and maintains charge dimensions
ctek power inc battery chargers charges and maintains charge 4-step charger dimensions
ctek power inc battery chargers  4-step charger multi us 3300 12-volt universal w/ pulse maintenance
ctek power inc battery chargers charger charges and maintains charge multi us 3300 12-volt universal w/ pulse maintenance

In Use/Installed

2013 mercedes-benz sprinter battery chargers ctek power inc charger ctek56158
2013 mercedes-benz sprinter battery chargers ctek power inc charger multi us 3300 12-volt universal w/ pulse maintenance
2013 mercedes-benz sprinter battery chargers ctek power inc charges and maintains charge ctek56158
2013 mercedes-benz sprinter battery chargers ctek power inc charges and maintains charge dimensions
2013 mercedes-benz sprinter battery chargers ctek power inc charger 4-step dimensions
2013 mercedes-benz sprinter battery chargers ctek power inc charges and maintains charge 4-step charger ctek56158

Customer Photos

ctek power inc battery chargers charger ctek56158
ctek power inc battery chargers charger multi us 3300 12-volt universal w/ pulse maintenance
ctek power inc battery chargers charges and maintains charge ctek56158
ctek power inc battery chargers charges and maintains charge dimensions
ctek power inc battery chargers charger ctek56158

  • Battery Charger
  • Charges and Maintains Charge
  • 12 Volts
  • CTEK Power Inc
  • 4-Step Charger
This powerful, all-weather, four-step charger uses a patented, pulse-maintenance system to charge and maintain all household 12V batteries - cars, campers, mowers, trucks and boats. A practical battery charger fits most applications. Call 800-298-8924 to order CTEK Power Inc battery chargers part number CTEK56158 or order online at etrailer.com. Free expert support on all CTEK Power Inc products. Guaranteed Lowest Price and Fastest Shipping for CTEK MULTI US 3300 12-Volt Universal Battery Charger w/ Pulse Maintenance. Battery Chargers reviews from real customers.



CTEK Power Inc Battery Chargers - CTEK56158

This powerful, all-weather, four-step charger uses a patented, pulse-maintenance system to charge and maintain all household 12V batteries - cars, campers, mowers, trucks and boats. A practical battery charger fits most applications.


Features:

  • Reliable, maintenance-free, 4-step system constantly monitors and maintains 12V battery charge
    • Won't overcharge or undercharge like common trickle chargers
    • Switches automatically to pulse-maintenance phase when full charge has been reached
    • Reduces risk of overheating, sulfation and premature battery failure
  • Easy-to-use, quick-disconnect system
    • Includes 2 battery-cable attachment systems w/ Comfort Connect end plugs - charger plugs right in
      • Eyelet-terminal cable permanently attaches to battery terminals
      • Clamp-terminal cable temporarily clamps to battery terminals
  • Safe, versatile design
    • Approved for indoor and outdoor use
    • Prevents reverse-polarity mistakes
    • Offers (3) 12V current modes
      • Motorcycle icon: lower current for smaller 12V batteries
      • Car icon: higher current for larger 12V automobile and marine batteries
      • Snowflake/AGM icon: special winter mode designed for charging and maintenance in cold weather; also recommended by many AGM battery manufacturers like Optima, Maxima and Odyssey
  • Convenient accessories (sold separately) provide additional security and convenience
    • Know your battery's charge level at a glance w/ optional LED-indicator battery cable
    • Reduce the hassle of charging multiple vehicles w/ additional battery-hookup cables


Specs:

  • Application: most starter and deep-cycle, 12V, lead-acid batteries - including wet, MF, AGM and most gel batteries
    • Charges batteries w/ capacities from 1.2 Ah - 75 Ah
    • Maintains batteries w/ capacities up to 120 Ah
  • Charge cycle: 4-step, fully automatic charger w/ pulse maintenance
  • Dimensions: 6.5" long x 2-3/8" wide x 1.5" tall
  • Includes:
    • 12V Battery charger (w/ 5' battery-connection cable and 6' power cord attached)
    • 1 Set of 16" battery cables w/ battery-terminal clips
    • 1 Set of 16" battery cables w/ M6 (6.4-mm) eyelet terminals
    • Owner's manual
    • Protective case
  • 5-Year warranty
CTEK MULTI US 3300 bulk charging time chart

This CTEK charger comes w/ two battery cables: one w/ clamp terminals and one w/ eyelet terminals. The 16" long eyelet-terminal cable can be left attached to the battery, and the clamp-terminal cable is great for temporary connections.

CTEK MULTI US 3300 Charger w/ both clamp and eyelet cables



Whenever you want to charge the battery, just plug CTEK's patented Comfort Connect attachment terminal into the receiving end on either of the provided battery cables.

Close-up of CTEK's Comfort Connect plugs

CTEK MULTI US 3300 Charging Process

Safe, four-step process uses switch-mode, pulse-maintenance technology.

  1. Desulfation stage is the initial charging phase. This stage uses electronic pulses to desulfate batteries by converting lead sulfate crystals back to usable sulfuric acid.
  2. Bulk stage is the main charging phase. This stage accounts for 80 percent of the charging process and uses a constant charge level.
  3. Absorption stage completes the charge (to virtually 100 percent) using diminishing current to prevent battery damage.
  4. Pulse-maintenance stage begins 18 hours after the battery is fully charged. In this stage the charger maintains the battery at the optimum charge level of 95 to 100 percent by recognizing any drop in voltage and sending a corresponding pulse of current to keep the battery properly charged. Pulse maintenance can be continued for months at a time.
CTEK MULTI US 3300 charging process chart

A goof-proof design distinguishes CTEK's new-generation chargers from the competition - you don't have to be a mechanical guru to keep your battery working at top efficiency. CTEK's patented charging system monitors your battery, providing exactly the charge it needs during each unique charging stage!

Protects the User

Your personal safety is paramount, and CTEK's spark-free, short-circuit-proof design incorporates a feature that prevents reverse polarity, keeping you safe. You simply cannot make a polarity mistake: The charger will not operate if it is attached incorrectly. In addition, the red alarm light on the charger alerts you if there is a reverse-polarity problem.



Protects the Battery

CTEK's patented, switch-mode, pulse-maintenance charging system is scientifically engineered to safely charge your battery by employing the most up-to-date technology. Using carefully monitored, low-grid voltage, CTEK's patented process differs from competitors' chargers in its ability to provide the precise final voltage that your battery needs to maintain optimum charge level. This sophisticated, interactive device will never overcharge or undercharge your battery. You may leave it attached to the battery for months, making it perfect for seasonal vehicle storage.

Won't cause overcharging or overheating. These together can cause gassing and excessive acid concentration that shortens the life of the battery by corroding the lead plates. When overcharged, the battery cells become dried out. Electrolytes "boil dry," generating excessive heat that can cause a fire.

Won't cause undercharging or sulfation. Undercharging can be just as damaging to your battery as overcharging because chronic undercharging leads to sulfation. Sulfation occurs when the lead and lead dioxide of the battery's plates react w/ sulfuric battery acid to produce lead sulfate. This in turn is converted back to lead, lead oxide and sulfuric acid. A small, unavoidable amount of sulfation and gassing naturally takes place as a result of the chemical processes occurring in lead-acid batteries. However, extensive undercharging causes extra lead sulfate to accumulate on the lead plates of the battery. Because the crystalline form of the sulfate cannot hold an electrical charge, excessive sulfation greatly diminishes the charging ability of the battery, eventually rendering it unusable.

Provides desulfation w/ a patented process. Desulfation is the reversal of sulfation damage. The CTEK charger's unique process not only prevents the undercharging that produces excess sulfation, it also includes a desulfating step that can often "revive" a lightly sulfated battery. It accomplishes this w/ carefully monitored electronic pulses of energy that help to break down the lead sulfate crystals, allowing the battery to accept charge once again.

Ensures consistent charging w/ low ripple-wave percentage rate. Ripple-wave percentage is the quantity of disturbances exhibited in current and voltage. Even minor variations in household current can cause undercharging or overcharging, but CTEK's low-ripple design regulates the incoming current before passing it on to your battery. This process can cause the charger to be a little slower than linear chargers but results in a healthier, more productive, longer-lasting battery.



Protects the Vehicle and Its Electronics

The charger is also safe for your vehicle. Its sophisticated circuitry is designed to be compatible w/ today's sensitive electronics and audio equipment. You can confidently charge your battery while it is still in the vehicle: no more hefting heavy batteries or dealing w/ tiresome system resetting! CTEK's low ripple rate eliminates the danger of damaging electronic devices connected to the battery, and it prolongs the battery's service life.



CTEK MULTI US 3300 indicator chart

Indicator lights on the face of the charger light up to show the current charging stage.


Additional Specs:

  • Model: 56-158 (MULTI US 3300)
  • Input voltage: 100 VAC - 120 VAC, 50 Hz - 60 Hz
    • Output power is reduced at lower input voltage; a perfect charge will still be achieved
  • Current: 1.1A rms (at full charging current)
  • Charging current: 0.8A - 3.3A max
  • Back current drain: 1.3 mAh per month
  • Charging voltage: 14.4V - 14.7V
    • Nominal charging voltage: 12V
  • Ripple wave: less than 2 percent variance (max 50 mV rms, max 0.13A)
  • Battery cable fuse: 15A
  • Ambient temperature: -4 degrees F to +122 degrees F
    • Automatic reduction of power at increased ambient temperature
  • Cooling: natural convection
    • Do not cover the charger


56-158 CTEK MULTI US 3300 12V 4-Step, Pulse-Maintenance, Lead-Acid Battery Charger

CTEK56158 Installation InstructionsInstallation Details CTEK56158 Installation instructions



Economy - This item

CTEK MULTI US 3300 12-Volt Universal Battery Charger w/ Pulse Maintenance


CTEK MULTI US 3300 12-Volt Universal Battery Charger w/ Pulse Maintenance
CTEK Power Inc Battery Chargers

40 reviews

Code: CTEK56158

In Stock

Retail:$74.99

Our Price: $69.99


  • Battery Chargers
  • Battery Charger
  • Charges and Maintains Charge
  • 12 Volts
  • 4-Step Charger
  • CTEK Power Inc


This powerful, all-weather, four-step charger uses a patented, pulse-maintenance system to charge and maintain all household 12V batteries - cars, campers, mowers, trucks and boats. A practical battery charger fits most applications.

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Video of CTEK MULTI US 3300 12-Volt Universal Battery Charger w/ Pulse Maintenance


Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for CTEK Battery Charger Vendor Information

CTEK was founded in Sweden. Basically our parent company is a prototyping company. Prototypes everything from plastics to electronic equipment right down to batteries but we actually consider ourselves a battery company with out batteries. We know everything about them. How to make them last longer and perform better. We just deal with the charging and maintenance end of it. 00:18

We have a patented mode of charging for one thing that we go through. Ultimately what this is going to do is bring our battery up to charge and then shut off completely versus your traditional trickle mode or linear charge like others might do on the market. If you could actually see current and voltage what you would see with those traditional charges you are putting in the same current and voltage high amperage level. We actually consider those toasters a lot of times because they generate more heat than charge and ultimately can toast the battery if not used properly or left on too long. 00:45

We have a patented mode of charging for one thing that we go through. Ultimately what this is going to do is bring our battery up to charge and then shut off completely versus your traditional trickle mode or linear charge like others might do on the market. If you could actually see current and voltage what you would see with those traditional charges you are putting in the same current and voltage high amperage level. We actually consider those toasters a lot of times because they generate more heat than charge and ultimately can toast the battery if not used properly or left on too long. 00:45

We realize that nobody cares about their battery. It is an evil that nobody wants to see and unfortunately nobody cares about it until it is too late and there is a problem where your vehicle does not start or your batteries are discharged to the point where you need to replace them. With our add on series, the comfort indicator, we have simply made your battery visible now. It is a one time installation. You bolt it directly to the battery with the flashing LED lights in there at all times visible you know where your battery stage of charge is at and if you need to charge it. Everything about our charger is we try to make it really safe, easy to use, and very functional. That is part of the quick connect and comfort indicator series that we have launched. Basically the concept behind it is you can have your one time installation on the battery especially with the comfort indicator series with the LED lights in it, now your battery is actually visible. You know at all times when you need to charge your battery and then it is pretty easy to use basically and you can balance your charger from vehicle to vehicle as you need to charge. 02:07

We like to think we have the best charger on the market. We try to stay ahead of the curve with the technology that we are putting into the battery chargers. CTEKs all are back by five year no questions asked warranty. Every household needs one of these chargers. It is a very robust design and it absolutely works on everything. From your lawn tractor, your boat, your RV, your motorcycle, your sports car. It is a very indispensable product to have.


Customer Reviews

CTEK MULTI US 3300 12-Volt Universal Battery Charger w/ Pulse Maintenance - CTEK56158

Average Customer Rating:  5.0 out of 5 stars   (40 Customer Reviews)

This powerful, all-weather, four-step charger uses a patented, pulse-maintenance system to charge and maintain all household 12V batteries - cars, campers, mowers, trucks and boats. A practical battery charger fits most applications.

- CTEK56158

by: Bob B. - etrailer.com Employee11/14/2013


Got a booming radio that tends to kill the battery after a day of hanging out at the gravel bar. This charger I installed under the hood and ran the plug to the front bumper. So I have 2 options. 1. If there is power nearby just plug it in and no worries. 2. At the end of the day when back at the house just plug in overnight so battery is fully charged the next day without needing to leave the truck running to charge back up. 107360



- CTEK56158

by: Richard F.07/06/2015


The charger works great in the charge mode. An Optima battery took an overnight charge. And the weekend car also charged overnight. It is now on the maintenance mode. The two types of connections are very helpful. 209671


Comments

The charger works great. And it is easy to use.

Richard F - 07/27/2016

19727

- CTEK56158

by: Kevin12/26/2012


The CTEK 3300 is being used to keep my hot rod battery charged because it's not a daily driver. It took about one day and then the amber light turned green and has stayed that way for a month now. All I do is unplug the unit from the car and it starts right up. It sure is nice to be able to leave this one hooked up to the car in place of my older one that I would only use for a few hours at a time. So far I'm very happy with it and I would buy another one if I had two batteries to keep charged. 61891



- CTEK56158

by: Tom T.12/22/2016


Good price, fast and friendly service. Items arrived on time and well packaged. I'm impressed that etrailer even sent a follow-up email to confirm my satisfaction. I have used the CTEK 3300 charger for over 5 years and it is outstanding. It has done a perfect job of charging/maintaining gel batteries on 3 vehicles and two tractors. Purchased two more to give family members as gifts. Thanks etrailer! 327189



- CTEK56158

by: Bruce K.12/18/2016


Ordered this item to go with the CTEK battery charger I also ordered. Now I don't have to pop open the hood to connect the CTEK charger to the battery. The items were shipped quickly even with the poor weather conditions we were enduring. I've always liked their price and assistance available for merchandise purchased thru etrailer. Kudos for the staff at etrailer.com. 326852



- CTEK56158

by: Ken Young12/21/2016


Just received this product today. I installed it in my Fiat 124 Spyder and it is charging now. Seems to be working OK and correctly 327115



- CTEK56158

by: Calvin M.01/24/2015


The Ctek charger is small, but very effective. I have a vehicle that I only drive once or twice a month. Now I don't have to worry about the battery being dead and having to have the computer reprogram after jumping it off. Works great. Thanks Etrailer!! 171103



- CTEK56158

by: Martin M.09/29/2014


Needed a way to keep my Scag's battery topped off in between mowings. Love the ability to hardwire an adapter to the battery that I can quickly connect or disconnect from charger. Works great and quick shipping too. Thanks etrailer! 153569



- CTEK56158

by: Pete V10/01/2016


Exactly what I needed etrailer had. Fast delivery everything I ordered was in great condition. Great service. Have ordered from etrailer several times, always on time and is exactly what was ordered. 302707



- CTEK56158

by: Steve R07/13/2016


Product arrived a day early, I immediately put it to use on a weak battery. Easy to assemble and use. Service and follow up by etrailer has been excellent. 271294


Comments

Its been a year, this charger gets infrequent use however, when I need it it works simply and effectively. Very satisfied.

Steve R - 07/14/2017

26093

- CTEK56158

by: Matt07/06/2015


Using this on battery back sump pump system. Customer service was very helpful when I had questions on which model to order for the application. Thank you. 209839



- CTEK56158

by: Isaac D.12/23/2014


Easy to follow directions, battery is charging at this present moment. Lightweight small and convenient. I have no doubt that it will satisfy my needs. 166722



- CTEK56158

by: Chet M.12/29/2016


So far it looks great. Easy to set up and use. I'm using it to charge two 6 volt batteries hooked up in series. 328741



- CTEK56158

by: Joel B.06/30/2011


Great charger's that are made by CTEK E-Trailer's service is great and fast. 18284



- CTEK56158

by: Robert LaBonte10/08/2013


Very well made. Seems to have every needed option. 103020



- CTEK56158

by: J04/13/2016


Great design / features, easy to use. 244072



- CTEK56158

by: Andy09/23/2016


Works as advertised, no issues 297993



- CTEK56158

by: Triple D Ranch07/22/2013


thank's work's good 90944



- CTEK56864

by: Bill Y.09/28/2015

Review from a similar CTEK Power Inc MULTI in Battery Chargers


I really like the recondition feature on this charger. It reconditioned and charged my aging battery very promptly. I also like the compact size of the unit. Great product. 228077


Comments

My 4 year old truck battery started losing charge after sitting a few days. I removed it, checked the water which was a bit low, put it on recondition mod and recharged. It has been working like a new one for the past two months.

Bill Y - 09/27/2016

21273

- CTEK56353

by: Mike N.04/04/2015

Review from a similar CTEK Power Inc MULTI in Battery Chargers


Excellent product, keeps my deep cycle battery up to charge. 183123


Comments

Still works great, no issues.

Mike N - 04/03/2016

17363

- CTEK56864

by: Barney B05/24/2014

Review from a similar CTEK Power Inc MULTI in Battery Chargers


Very high quality, compact, easy to use charger with many features. It is perfect for maintaining a charge on batteries that only get utilized periodically but can be used to charge as well. Would definitely recommend both the charger and etrailer.com. 132255


Comments

Still very pleased. Works great!!

Barney B - 05/26/2015

12045

- CTEK56864

by: Tom07/21/2016

Review from a similar CTEK Power Inc MULTI in Battery Chargers


I bought two of these based on the recommendations of people on the Jet-Ski forum I'm on. I also found out that Porsche recommends this brand for their vehicles. I use them to maintain the charge in my intermittently used car and Jet-Ski so the chargers are used a lot. In one year of use I haven't had any battery or charger problems. The unit is capable of maintaining a charge and restoring a charge to a flat battery. It is hard to measure the performance of a charger but compared to previous chargers I have used I think it does a great job of keeping the battery functional. 274426



- CTEK56864

by: Adam R. - etrailer.com Employee01/20/2014

Review from a similar CTEK Power Inc MULTI in Battery Chargers


I have another trickle charger that I've used for years on my older Harley, but it is a single-mode charger. I decided to get a second one so I do not have to constantly move the one from the bike to the lawn mower to the car, etc and chose this one based on excellent reports from my co-workers who also use this C-TEK unit. Having had this in use for about 3 weeks now I can report that it works well, offers several modes, including the winter storage mode I am using now, and came with very detailed instructions and plenty of adapters for various applications. I'd buy this again. 114205



- CTEK56353

by: Todd06/07/2011

Review from a similar CTEK Power Inc MULTI in Battery Chargers


This is my second purchase for etrailer. The service has been excellent each time, and the quality of the products is also excellent. The CTEK battery charger is easy to use. I have used it on Optima batteries, which don't charge as well on conventional chargers. It works great. Just hook it up, and it stops when it is finished. 16321



- CTEK56864

by: David04/08/2013

Review from a similar CTEK Power Inc MULTI in Battery Chargers


The reconditioning mode on the 4.3 did in fact recondition my car battery when simply charging it with a CTEK 3.3 didn't. I conclude this based on the better retention of charge after the 4.3 than after the 3.3. As always, etrailer's service was prompt and courteous when I ordered a second 4.3 DS 74922



- CTEK56353

by: BP Travel04/07/2015

Review from a similar CTEK Power Inc MULTI in Battery Chargers


Excellent product does as advertised. I read a comment from one of the eTrailer experts that this battery charger can provide 12VDC as a power supply. Hooked it up and it does exactly what I need - providing shore power a few lights and fans in my cargo (motorcycle) trailer. 183861



- CTEK56864

by: A.J.09/18/2014

Review from a similar CTEK Power Inc MULTI in Battery Chargers


After a recommendation from our mechanic, we purchased two CTEK trickle chargers and are extremely excited about how they will benefit the battery life of these cars over the next several years. All we can say now is, so far...so good. 151954



- CTEK56864

by: Gary11/09/2016

Review from a similar CTEK Power Inc MULTI in Battery Chargers


Great performance in a light weight small package. Very sophisticated charging options to charge a wide variety of batteries in various temperature conditions. I trust this charger for my best quality batteries. 315287



- CTEK56864

by: Dan S.12/20/2013

Review from a similar CTEK Power Inc MULTI in Battery Chargers


This CTEK charger got my large automotive battery up to full capacity in no time, and is maintaining it perfect through cold winter storage. As usual, prompt & well packaged delivery from etrailer! 110746



- CTEK56864

by: Thomas05/28/2016

Review from a similar CTEK Power Inc MULTI in Battery Chargers


Powerful compact unit. Boat battery after winter storage charged right up. Even used the charger for smaller rechargeable batteries used in wireless speakers. Stores away very neatly in tool box 252754



- CTEK56864

by: Michael G10/29/2014

Review from a similar CTEK Power Inc MULTI in Battery Chargers


Purchase battery charger to charge batteries in my new trailer. Charged batteries to full capacity and went into float mode. Very satisfied with product and would highly recommend it to others. 158388



- CTEK56864

by: Blake A08/26/2017

Review from a similar CTEK Power Inc MULTI in Battery Chargers


The complete charger is for a Mercedes Sprinter Motor Home, Pleasure Way. It works flawlessly in keeping the house battery charged and topped our as needed. Best charger I have found. 425540



- CTEK56864

by: AD03/25/2013

Review from a similar CTEK Power Inc MULTI in Battery Chargers


I have ordered products from etrailer for years and have never been disappointed in the products , price or promptness of delivery. 72365



- CTEK56864

by: Ted C.11/28/2012

Review from a similar CTEK Power Inc MULTI in Battery Chargers


Have ordered from etrailer in the past, fast shipping and battery charger seems to operate fine! 60127



- CTEK56864

by: R Hochnadel02/20/2014

Review from a similar CTEK Power Inc MULTI in Battery Chargers


Exactly what I needed to maintain several different size batteries at the same time. 117061



- CTEK56864

by: Emma E11/05/2016

Review from a similar CTEK Power Inc MULTI in Battery Chargers


Easy to use, kept my battery up all winter without any problems. Would recommend. 313983



- CTEK56864

by: Michael03/12/2017

Review from a similar CTEK Power Inc MULTI in Battery Chargers


With this items I am fully satisfied - thanks for follow up - any time again 351641



- CTEK56864

by: L. Ott02/26/2015

Review from a similar CTEK Power Inc MULTI in Battery Chargers


Arrived quickly and Works like a charm on my deep cycle, trailer battery. 176255



- CTEK56353

by: Tom12/26/2014

Review from a similar CTEK Power Inc MULTI in Battery Chargers


Excellent product but Made In China. 167002



- CTEK56674

by: George J05/14/2017

Review from a similar CTEK Power Inc MULTI in Battery Chargers


Thank you works GREAT 380259


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Ask the Experts about this CTEK Power Inc Battery Chargers
Do you have a question about this Battery Charger?


  • How To Charge Trailer Battery On Dump Trailer Using The 7-Way Trailer Connector
  • You will want to use a circuit tester like the Quickee Tester, # 3808, and check the # 4 terminal on the back of the 7-way trailer connector on your trailer for power. This is the 12 volt power terminal so there should be power to that terminal. You will need to run a 10 gauge power wire like the, # 10-1-1, from the # 4 terminal (12 volt) on the 7-way trailer connector on the trailer to the positive terminal on the trailer battery. This will allow you to maintain a charge on your trailer...
    view full answer...

  • Can a 7-Way Trailer Connector Be Used To Charge the Trailer Battery
  • The 12 Volt auxiliary terminal on your 7-way connector can be used to keep the battery on your trailer charged. You will need to run a 10 gauge power wire like # 10-1-1 from the 12 volt auxiliary terminal on the 7-Way trailer connector on the trailer to the positive terminal on the trailer battery and ground the negative terminal of the trailer battery to the trailer frame. This will allow you to maintain a charge on your trailer battery, it will not charge the battery from a discharged...
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  • Recommended Flat-Towing Equipment for 2017 Jeep Cherokee
  • The base plates we offer that are designed to fit your Cherokee is the Roadmaster EZ5 Base Plate Kit, part # RM-521447-5. This base plate kit has drawbars that can be removed for a clean, almost-hidden look. The installation may require trimming of spoiler, air dam, grille or plastic fascia. We do not offer any Blue Ox base plates that are designed to fit your Jeep. There are five items needed when you are flat-towing. You need the base plates, like those mentioned, a tow bar, safety...
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  • How to Connect two 12 Volt Batteries and Still have 12 Volts Output
  • There are two ways to wire up two batteries. One way doubles the volts of the two batteries and the other keeps the same amount of volts. In parallel the voltage stays the same and in series it is doubled. Check out the diagram for more info.
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  • Adding a Battery and Wiring to a Non-Powered Trailer to Add Interior Lights to an Enclosed Trailer
  • The first thing you will need is a battery and a battery box. The wiring for the light will need to be connected directly to this battery via a switch that you can get at a hardware store if the light does not already have a switch. Or you can install a new light that has a switch like the Trailer Dome Light with Switch and Aluminum Base, # IL61CB. Mount the switch in the trailer, route the wiring from the light to the switch, and then from the switch to the battery. If the light is...
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  • How to Wire Two 6-Volt Batteries In Series to Double Output Voltage
  • To wire two 6-volt batteries in series to produce 12-volts, you would connect the load to the positive terminal of battery # 1. Connect the negative terminal of battery # 1 to the positive terminal of battery # 2. Ground the negative terminal of battery # 2. I have produced a diagram showing the connections for you.
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  • Charging a Trailer Breakaway System Battery Using the 12 Volt Circuit on a 7-Way Connector
  • To charge the battery in the Engager Trailer BreakAway Kit, # 20099, you can attach the wire from the 12 volt circuit on the trailer side 7-Way (1 oclock position on the back of the trailer side 7-Way where the wires attach) to the input wire on the trailer breakaway system. This system has a charger built in to it. As long as it is connected to a function 12 volt circuit it will charge the battery. When connected to the towing vehicle and the vehicle on and/or running, the 12 volt circuit...
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  • Installing a Battery on a Trailer and Wiring it to Run Interior Trailer Lights
  • I recommend a 12 volt car battery rather than a breakaway battery because you may end up needing the larger battery down the road. What you will do is attach a battery box (see link for options) to the trailer frame. From the trailer side 7-Way connector, there will be a wire attached to the pin in the 11:00 position (if looking at the face of the plug). This is the 12 volt circuit. You can attach that to the positive terminal of the battery. It will maintain the battery but it will...
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  • Parts Needed to Add Interior Lights to Enclosed Trailer with 7-Way Connector
  • To mount a 12V battery in your trailer to power its lights you will possibly need a battery box like # PH13035 to hold it securely and also a way to tap into the 7-way's 12V trickle charge circuit, such as a junction box like # 38656, along with ring terminals like # DW05702-1. Note that a 7-way power feed can maintain a charged battery but cannot deliver enough power to charge a depleted one; for that you need a charger like the # CTEK56158 that you referenced. For maximum light operation...
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  • 12 Volt DC Battery Charger Recommendation for Charging an Auxiliary Battery with a Truck
  • This Tekonsha Two Stage 12 V DC Battery Charger, part # 2024-07, is designed to charge 12 volt systems while being used on a 12 volt power source like your truck has. However, the # 2024-07 is designed for maintaining smaller batteries that go through extended periods of not being used. It is not designed to charge a larger vehicle battery like the one you have in your truck. I would recommend you use a CTEK MULTI US 3300 12-Volt Universal Battery Charger w/ Pulse Maintenance, part...
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  • Preventing Trailer Mounted Battery from Draining Battery on Tow Vehicle
  • A trailer mounted battery is typically maintained by the 12-volt accessory circuit from the 7-way trailer connector. If the accessory circuit on your 7-way is live even when the ignition is shut off, it is possible that the battery on your truck could be discharged. If shutting off the ignition shuts down that circuit, you will have no worries. If the circuit is live with the ignition off, you can unplug the trailer, disconnect the 12-volt accessory circuit from the trailer mounted battery,...
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  • Electric Trailer Jack Light Comes On but Motor Does Not Run
  • I do not think the fuse is blown because the light still comes on. It sounds like the motor has gone out. This could happen from over extending a jack or overloading it. If the jack is connected to a battery mounted on the trailer, the battery may not have enough juice to power on the motor but just the light. Take the battery off and have it tested. For a battery charger, use # CTEK56158. This charger works much better than a trickle charger and can revive a battery unless it is completely...
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  • How to Charge, Maintain and Wire a Winch Battery, Wiring Front of Truck to Trailer
  • Running a charge line from a vehicle charging system for charging a trailer mounted battery can be accomplished but the vehicle charging system does not have enough power to charge a battery that distance away from a discharged state. The charge line is only capable of maintaining a sufficiently charged battery while the vehicle is running. In your case you have two options. The easiest is to use a battery charger like the CTEK MULTI US 3300 12-Volt Universal Battery Charger w/ Pulse...
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  • How To Charge Trailer Battery From a Chevrolet Silverado With a 7-Way Connector
  • To keep the trailer battery charged you will need to run a 10 gauge power wire like the, part # 10-1-1, from the 12 volt power pin (# 4 terminal at 11:00 position) on your trailers 7-way connector, to the positive terminal on the trailer battery. Now when the trailer is connected and you are towing, the tow vehicle will provide a maintenance charge to the trailer battery. It will not charge the battery from a discharged state. You will want to test the # 4 terminal at the 1:00 position...
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  • Charging Six 6-Volt Batteries in a 12 Volt System with 1 Battery Charger
  • You can choose multiple batteries provided they are connected in parallel to remain a 12 volt system. You will connect the positive terminal at the first battery positive post and the negative terminal to the first battery negative post. If you have 2 banks of 3 batteries, you would have to separate the 2 banks of batteries and charge each set of 3 separately. You will want to use a larger charger that can handle a higher ah rating. The CTEK MULTI US 7002 12-Volt Universal Battery Charger,...
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  • Which Missing Fuse in 2005 Chevrolet Tahoe Will Power 12V Trailer Circuit to Charge Trailer Battery
  • Your 2005 Chevrolet Tahoe requires a 40-amp fuse be installed in the power distribution block under the hood. Please refer to the color photos in the linked article. These illustrate the location of the accessory fuse block in the engine compartment on the drivers-side. I have also provided a photo showing the location of the required 40-amp fuse (amber-colored in the photo). Installation of the fuse (and possibly a required wiring connection to the positive power post) will enable transfer...
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  • Is it Safe to use a CTEK Battery Charger for Long Periods of Time on a Stored Vehicle
  • You should have no problem setting this battery charger and leaving it for months on end, unattended. The CTEK Battery Chargers work very differently than the old, traditional battery tenders. The old tenders used a trickle charge. Basically they constantly applied a little bit of power. This wastes electricity and can lead to some lead acid batteries overflowing, which is a big problem. The CTEKs do not trickle. Instead they detect that the battery has lost some charge. Then the...
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  • Powering Hydraulic Dump on Dump Trailer
  • If you are looking for something to power the dump on your dump trailer, I highly recommend an independent battery specifically for powering the dump trailer. We have a few different options for charging the battery on the dump trailer. Powering the dump off of the vehicle battery may put too much draw on the vehicle battery. One way you could charge the battery to power the dump trailer is using a CTEK Universal Battery Charger, such as # CTEK56158. This battery charger maintains and...
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  • Using 7-Way Trailer Connector 12-volt Accessory Circuit to Power Boat Winch
  • An electric winch used to pull a boat up on a trailer is designed to be wired directly to a 12-volt battery. The wire that feeds your 7-way trailer connector is too small in gauge to be able to handle the amperage draw of a winch. Attempting to use the 7-way to power the winch will almost certainly lead to blown fuses. Typically, a winch would be connected to an auxiliary battery located on the trailer. The auxiliary battery can be maintained with the 12-volt circuit from the 7-way,...
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  • How to Connect Two 6 Volt Batteries and a 12 Volt Battery Together and Have 12 Volts
  • I attached a picture that shows how to run batteries in both series and in parallel. You will need to wire up the 6V batteries like the picture on the left so that they would be in series and at 12 volts. To connect a 12 volt battery to that circuit you would need to run the positive post of the 12v battery to the positive side of the battery run on the in series batteries. Not the one that is connecting the two batteries, the one that would be the output of the two in-series batteries....
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  • Installing 7-Way Connector on 2004 Ford Expedition with 4-Pole Trailer Connector
  • You are correct. That blue wire carries the output from the brake controller. To convert your 4-pole to a 7-way, use an adapter like part # 37185. The connector on the adapter would connect to your existing 4-pole. The remaining wires would connect as follows; the white wire would ground to the vehicle, the blue wire connects to the blue brake controller output wire and the black wire would be extended to attach to the positive battery terminal using an inline 40 amp circuit breaker like...
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  • Recommended CTEK Battery Charger for Marine Battery Running Backup Sump Pump
  • What you are wanting to do is certainly possible, but because the # CTEK56158 does not have a maintenance mode, it could not be permanently connected to the battery and forgotten about. My contact at CTEK tells me that their 7002 model, part # CTEK56353 does have a maintenance mode and could be continuously used to maintain your marine battery while remaining connected to the battery, and while the battery remains connected to the pump. Once the charger senses a voltage drop in the...
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  • How to Charge Multiple Optima Batteries with the CTEK 7002 # CTEK56353 Battery Charger
  • I Contacted CTEK to be sure that I could give you the correct information on charging your 4 Optima Yellow Top batteries. He said that as long as the batteries are connected in parallel, still a 12 volt system, you can use the CTEK MULTI US 7002 12-Volt Universal Battery Charger w/ Pulse Maintenance and Backup Power, item # CTEK56353, to charge all 4 batteries at the same time. He also stated that the CTEK MULTI US 7002, is the charger that they recommend for the Optima Yellow Top and is...
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  • 2006 GMC Sierra Trailer Wiring Not Supplying Battery Charge on a 2005 Slide in Camper by Six Pac
  • If you have a 7-Way connector on the rear of your 2006 GMC Sierra, the number 4 contact, in the 1 o-clock position, looking inside the connector from the rear of the vehicle, should be the 12 volt hot wire contact (see link). Check this contact with a circuit tester, item # 3808 if needed. If you do not have power to this contact then you will need to determine if there is a blown fuse. This fuse is under the hood in the power distribution box (see link). There should be a 40 amp fuse in...
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  • Battery Charger for a Trailer Battery on a Dump Trailer
  • For your larger battery, I do recommend the CTEK MULTI US 3300 12-Volt Universal Battery Charger, part # CTEK56158. This charger is designed for larger batteries like the one on your trailer. The 12-volt accessory circuit on your 7-way trailer connector can be used to maintain a charged battery, but it won't have enough push to charge a discharged battery.
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  • Can 7-Way Trailer Connector Accessory Circuit be Used to Power Trailer-Mounted Winch
  • The 12-volt accessory circuit lacks the amperage to power a trailer mounted winch. Your best bet would be to either install a 12-volt deep cycle battery on the trailer, and use the 12-volt accessory circuit to keep that battery maintained, or use a winch wiring kit like part # SW2008 and connect the winch to the vehicle battery. If you use the 12-volt accessory circuit to maintain the trailer-mounted battery, I would recommend installing a battery isolator, like part # TR118665. The...
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  • Troubleshooting a Constant Blinking Power Light on the CTEK MUS 4.3 to Recondition a Battery
  • I have confirmed with my contacts at CTEK and the green power indicator light should be continually flashing during the reconditioning or charging process. If it is not flashing then the charger is not recognizing the battery. This could be due to an bad connection or a completely dead battery. I recommend checking the connection points on the battery and make sure that they are secure, weather you are using ring terminal or clips, please make sure that you have a solid connection....
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  • Wiring a Trailer Mounted Winch to a Trailer Battery and Vehicle Battery
  • I have just what you will need. I have linked an FAQ article that explains the various ways to wire a winch. You will need the second half of the page titled Option 2: Wiring the Winch to a Separate, Trailer-Mounted Battery. I have also included a picture that shows how it would all go together. You will need a battery isolator, # TR118665, some wire like # 10-1-1 or # 12-1-1 sold in 1 foot increments, and a 40 amp circuit breaker # PK54540. You will wire it all up like in the picture. Please...
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  • Availability of an Electric A-Frame Jack for a 24 Foot Cargo Trailer
  • The Etrailer Electric A-Frame Jack, # EJ-3520-BBX, would work well for your enclosed trailer. When looking for an electric jack for a trailer you will want to find a jack that will handle the trailer's tongue weight. Typically, the tongue weight of a trailer will be 10 - 15 percent of the gross trailer weight. So, if your trailer's gross weight is 10,000 lbs, then the tongue weight will be 1,000 - 1,500 lbs. The best way to power an A-frame jack is to have a battery installed on...
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  • Can a CTEK Battery Charger be Used to Charge a Deep Cycle Battery While Using Lighting in a Trailer
  • Yes, you can use the CTEK US 3300 12-Volt Battery Charger, item # CTEK56158, to charge a battery while using the lights in the trailer. One thing to keep in mind is that the smaller battery charger will not be able to keep up with the lighting use in the trailer and the battery will eventually be drained, if not allowed to charge when the lights are not being used. It will not harm the charger. A better option is a charger that has a supply mode. The CTEK MULTI US 7002 12-Volt Universal...
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Info for this part was:

Test Fit:
Joe V
Expert Research:
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