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

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

Item # CTEK56158

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CTEK Power Inc AC to DC Battery Chargers - CTEK56158
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  • Battery Charger
  • CTEK Power Inc
  • Car/Truck/SUV
  • RV/Camper
  • Lawn Mower
  • Boat
  • Wall Outlet to Vehicle Battery
  • Charges/Maintains
  • AC to DC
  • 12V
  • 75 Ah
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.


  • All Info
  • Reviews (67)
  • Q & A (399)
  • Videos (3)
  • Photos
  • Why etrailer?

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



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 Power Inc Battery Chargers - Battery Charger - CTEK56158 Review

Today, we're going to take a look at the Ctek Multi US 3,300 12-volt universal battery charger with pulse maintenance. Now, this is a nice, reliable, maintenance-free, 4 step system that'll constantly monitor and maintain your 12-volt battery charge. It won't overcharge or undercharge like your common trickle chargers will do. It does switch automatically to pulse maintenance phase when the full charge has been reached, and it will reduce the risk of overheating, any sulfation, and premature battery failure. It uses the very easy-to-use quick disconnect system right here. It includes these 2 battery cable attachment systems that have the Comfort Connect end plugs that'll plug right into the charger here. First one I want to show you is the clamp terminal cable.

This will temporarily clamp to your battery terminals. Just clamp that to the positive and negative posts. Here's your Comfort Connect plug, and you can see the charger end. Just push it right together. There's a little tab there that'll lock them into place.

To remove it, just push down on that tab, and it releases it. It's a very quick connection, just like that. Now, the other cable it comes with, this is the eyelet terminal cable. This is if you're going to permanently attach the cable to your battery terminal. You attach these to the positive and negative posts, and you can see on this end, it again has the Comfort Connect, but this one, because it'll be permanently in your vehicle, has a nice plug on it, to protect those terminals from any elements. Now, both of them, you can see, they do have an inline fuse holder in both of them.

It includes a 50 amp fuse to protect them. This system is a safe, versatile design. It's approved for indoor and outdoor use, prevents reverse polarity mistakes. Now, it does offer 3 12-volt current modes. The modes are right down here. The first light is the on or off light, and to switch to a different mode, there's a button right here that you just push, and it'll go across.

The first mode pictures a motorcycle icon. That's a lower current mode for smaller 12-volt batteries. If you push the button again, it'll go over to the car icon. That's a higher current for a larger 12-volt automobile marine batteries. Then, if you push it again, it'll go over to the snowflake, or this AGM icon. That means it's a special winter mode. It's designed for charging and maintenance in cold weather. It is also recommended by many of the AGM battery manufacturers like Optima, Maxima, and Odyssey. Now, along with this system, Ctek does offer convenient accessories that we do sell separately on our website, that'll provide additional security and convenience. They do sell extra hookup cables like these here, if you need to buy them for extra vehicles. They also sell an optional LED indicator battery cable, that it'll show on the custom connect, it'll have 3 lights that'll show the battery's charge level at a glance. Either one of those are a nice accessory to add. We do sell those on our website separately. Application for this is most starter and deep-cycle 12-volt lead acid batteries, including wet batteries, MF, AGM, and most gel batteries, charges batteries with capacities from 1.2 amp hours up to 75 amp hours, and it'll maintain batteries with capacities up to 120 amp hours. The charge cycle on this is a 4 step, fully automatic charger, again, with pulse maintenance. It includes everything shown here. The 12-volt battery charger has a 6 foot power cord attached to it. On the other end is the 5 foot battery connection cable with the Comfort Connect plug on the end. The 2 cables I mentioned earlier, they're both 16 inches in length. You have the battery terminal clips on this cable, and then the eyelet terminal's on this one. It comes with a nice, thick owner's manual that'll describe all the procedures and how to do them. Then, this nice, protective case that you can open up, and it's large enough to put all the items in and keep them all in one area, so you don't lose anything. Last thing I want to give you is the dimension on the charger itself, just so you know how large this is. The length on it, edge to edge, is right at 6 1/2 inches. The width, from one side to the other side, is right at 2 3/8 inches, and the overall height, top to bottom, 1 1/2 inches tall. That should do it for the review on the Ctek Multi US 3,300 12-volt universal battery charger with pulse maintenance.


Customer Reviews

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

Average Customer Rating:  4.9 out of 5 stars   (67 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:

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:

Have been very impressed with this product Very easy to use and has saved several batteries that seemed unchargeable I have one mounted permanently in my car trailer, and bought a second one to keep on hand in the garage. Bought a third one for my son 594102



- CTEK56158
by:

thank's work's good 90944



- CTEK56158
by:

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:

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:

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:

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:

Great product and well made 682278



- CTEK56158
by:

Have bought 3 of these to date Best charging solution I have ever owned Never worry about overcharging Was even able to give new life to a battery tested as dead / replace This battery is now still going after a year in ongoing service 667757



- CTEK56158
by:

These are great battery chargers I have had one for two years now with no problemo. I just purchased another one for my rv they are a must for a agm battery. 657215



- CTEK56158
by:

Too early to tell 614845



- CTEK56158
by:

I installed on my 2017 Polaris ranger, this charger keeps my battery at 100%. I keep it plugged in when not in use. Very easy to install, also on dash of the Polaris the plug snaps right in vacant spot and looks as if it came from factory that way. Very happy with charger! 607801



- CTEK56158
by:

Great product and seller. Beats spending $395 at Porsche dealership. 590679



- CTEK56158
by:

Very good product. 562782



- CTEK56158
by:

I used this for my boat batteries. 472485



- CTEK56158
by:

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


Comments

Outstanding. Works perfect .... Same as day one.

Tom T - 12/23/2017

32223

- CTEK56158
by:

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:

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:

Works as advertised, no issues 297993



- CTEK56158
by:

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:

Great design / features, easy to use. 244072


Comments

Yet another good reason I do business with etrailer, you actually follow up. You do know that most companies talk about doing that but never do, right ? The CTEK still working great, one of the best things about it is the level of charge monitor. All I have to do is look and see if its a green or yellow flashing LED and charge if yellow.

J - 02/11/2018

34584

- CTEK56158
by:

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:

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:

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:

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



- CTEK56158
by:

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:

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



- CTEK56353
by:

Review from a similar CTEK Power Inc MULTI in Battery Chargers


Works well 593068



- CTEK56864
by:

Review from a similar CTEK Power Inc MULTI in Battery Chargers


So far so good 553367



- CTEK56353
by:

Review from a similar CTEK Power Inc MULTI in Battery Chargers


I purchased a C Tek battery charger and it is much more advanced than the Battery Tenders that I have used for years. While the Battery Tenders do a good job of keeping a battery up, the C Tek can in some cases restore a battery that is sulphated. I like it as it is also a power supply if you want to change your battery and not loose the settings in your car. 568609



- CTEK56353
by:

Review from a similar CTEK Power Inc MULTI in Battery Chargers


We have used the C-Tek chargers for many years for vehicle prototype development, and it is the only brand and model that we use. Our normal supplier did not have this item in stock. I searched online for someone who could supply our needs as we were behind on a project. Etrailer had this item in stock. They offered great customer service and fast shipping. We ordered 4 chargers. We will start using Etrailer.com in the future for the C-Tek and other items. 479791


Comments

Great

Scott - 02/28/2019

49968

- CTEK56864
by:

Review from a similar CTEK Power Inc MULTI in Battery Chargers


This product has performed as advertised. Instructions were fine. I use it on my Lawn Tractor over the winter months. 511949



- CTEK56864
by:

Review from a similar CTEK Power Inc MULTI in Battery Chargers


Real purchaser comment; no bot BS that makes me skeptical of many reviews. CTEK 4.3 lead-acid battery charger/tender product as advertised & researched across several internet sites/blogs arrived well packaged via free shipping and in short time given holiday season. My first-time purchase experience with eTrailer superb; good service and most competitve price found among several retailers 460653



- CTEK56353
by:

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:

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:

Review from a similar CTEK Power Inc MULTI in Battery Chargers


The CTEK 4.3 battery charger is working well for me. I needed one charger that would work for my smaller motorcycle batteries as well as my truck and sports car. The CTEK makes it easy to switch to each application. As usual etrailer delivered quickly. The only caveat is the battery terminal clamps are a somewhat odd shape. They work well on a auto battery but have a bit of difficulty locking on the smaller motorcycle terminals. Not a deal killer at all. 472402



- CTEK56353
by:

Review from a similar CTEK Power Inc MULTI in Battery Chargers


Have not had the chance to use it but I like the advance technology. Better than the rest. 680218



- CTEK56353
by:

Review from a similar CTEK Power Inc MULTI in Battery Chargers


This charger has worked flawlessly on a set of 4 golf cart batteries paired in series for a 12 volt system used on my RV. It is easy to operate and durable. Instructions are easy to understand. The easy clip exchange between battery clips vs. screw down rings makes it easy to switch over to other batteries, such as for my boat, for a quick charge. 674161



- CTEK56353
by:

Review from a similar CTEK Power Inc MULTI in Battery Chargers


Great chargers. Seems like the plastic used in the proprietary connectors could be better quality. Otherwise doing a great job keeping batteries in good shape. 640056



- CTEK56353
by:

Review from a similar CTEK Power Inc MULTI in Battery Chargers


I have had great luck with Ctek chargers. E-trailer is always a great vendor tobpurchase from. 588677



- CTEK56864
by:

Review from a similar CTEK Power Inc MULTI in Battery Chargers


Purchased 2 CTEK battery chargers and maintainers. They arrived quickly, were well packed, and worked perfectly. Excellent product if you travel for long periods and don't want your batteries to go flat. Very pleased with my purchase and the service from etrailer. Thanks. 585816



- CTEK56864
by:

Review from a similar CTEK Power Inc MULTI in Battery Chargers


I was needing a “trickle charger” to maintain my engine batteries on my 2007 Fleetwood Providence 39V. I chose this unit as it is small and I could connect it directly to my batteries by way of the supplied terminals which connect to the charging unit. I placed the charger in the compartment next to the batteries so it would not be directly in the same area as the batteries themselves. I attached the charger to the wall using 3M tape and ran the charging cable through a hole where other cables were going into the battery compartment. I’m hoping this will keep the batteries fully charged should I need to start the motorhome in the cold weather. 585337



- CTEK56864
by:

Review from a similar CTEK Power Inc MULTI in Battery Chargers


Performs as expected. Compact size is a plus for traveling. I use it regularly ro desulfate my trolling motor batteries. 576179



- CTEK56864
by:

Review from a similar CTEK Power Inc MULTI in Battery Chargers


Works well 567757



- CTEK56353
by:

Review from a similar CTEK Power Inc MULTI in Battery Chargers


Good product 546444



- CTEK56864
by:

Review from a similar CTEK Power Inc MULTI in Battery Chargers


I have used CTEK products before and I am very pleased with its use during the winter months for battery management. This recent order is my second CTEK and I plan not only to use it to maintain battery levels on my C7 corvette , but on other systems as well. Your price and shipping offers are excellent and I would recommend your service to anyone interested in battery chargers. 497062



- CTEK56353
by:

Review from a similar CTEK Power Inc MULTI in Battery Chargers


Excellent product - replaced a CTEK 3300. I will likely replace 3 more CTEK 3300 with the CTEK 7002. Great service by Shaun on the phone who enabled shipping overnight when I really needed it. Very courteous and professional. Thank You !!! 470415



- CTEK56864
by:

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



- CTEK56674
by:

Review from a similar CTEK Power Inc MULTI in Battery Chargers


Thank you works GREAT 380259



- CTEK56864
by:

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


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  • Adding a Battery to a Trailer with a 4-Way Connector
  • To run a charge line to your battery you will first need to install a 7-Way on your trailer. This can be done using the Epicord 7-Way Molded Trailer Plug with Junction Box # 277-000141. The Black wire in the junction box is the one that will carry the 12V power. Just simply use a ring terminal like part # 44-5310A and run 10 Gauge Wire # 10-1-1 to the positive terminal on your battery. The 4 wires that are currently on your trailer and tow vehicle are only for the lights and are not...
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  • Powering Interior Trailer Lights With AC Power
  • I do have a couple of solutions for you to power your trailer lights with AC power but I do not have a way to plug the whole 7-way into a wall outlet. However, there are two ways you can wire the lights to a trailer battery and successfully power them with AC power. The first way is wiring the lights to a trailer battery that is wired to a converter part # PD9130LV. You can use part # 10-2-1 to wire the converter to the battery. The other side of the converter then wires to a 30 amp...
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  • Add Battery/12V System To Existing 120V System In Pop Up Trailer
  • For the application that you are attempting, you will need to install a battery and wire the trailer to run off that battery instead of running off the shore power at a campsite. If all of your trailer lights and appliances run off of 120V then the 12 volt battery is not going to power them. you will need to add 12 volt accessories and lights to the trailer. If the trailer currently uses a converter from the shore power and the accessories and lighting run on 12 volts then you can run them...
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  • Can an Electric Trailer Jack be Powered from a 7-Way Trailer Connector
  • While you could possibly run the power from the 7-Way to the jack, it is not ideal and you could overload the circuit. I recommend adding a battery to the trailer and providing a maintenance charge to the battery from the 7-Way. You will connect the 12 volt circuit from the 7-Way trailer connector to the positive battery terminal. The jack will get its power from the trailer battery this way and not from the vehicle 7-Way. Having the wire to provide a maintenance charge will only maintain...
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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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  • Solar Charging System for RV with 6V and 12V Batteries
  • In order to have multiple solar panels provide trickle re-charging to an array of RV batteries you need to have a controller that can manage the output from the panels. My contact at Go Power! said that most 100 watt solar panels output 20 volts and this is simply to much for 12V and 6V batteries even if multiple ones are wired together. A controller like # 34280503 is essential for ensuring the panels' output is stepped down to the appropriate voltage/current to prevent overcharging. I...
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  • Wiring Exterior Trailer Lights to be Powered by Reverse Circuit and On Board Battery
  • In order to wire your exterior hi-mount trailer lights so that they are powered by the reverse light circuit on your Ram but can also be powered by the on board battery, you will just need to use a diode like the Roadmaster # RM-790. The output side of the diode will go to your exterior LED lights, while the input side will go to the center pin on your 7-Way and also to your on board battery via a switch like # PK34308. I also recommend adding a circuit breaker like # 9506P before the battery....
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  • Electric Trailer Jack and Landing Gear Recommendations for 3 Different Trailers
  • It sounds like you have 3 heavy trailers! For the first two trailers I recommend using a landing gear set such as # UF17-943010 rated for 12,000 pounds total. Each jack has its own motor so they can be raised and lowered independently of each other which is great for keep the trailer level. For the third trailer I recommend the Husky Brute # HT87247 which is rated for 4,500 pounds. Since the jack will be mounted towards the front of the trailer it will not have to handle the total weight...
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  • Will 7-Way Charge Trailer Battery
  • The yellow wire on the Hopkins 7-Way RV Style Connector with Molded Cable # H20046 will not be able to charge an on-board battery, it should really be used for reverse lights. To charge the auxiliary battery on your trailer the best option is to use a battery charger such as the CTEK MULTI US 3300 12-Volt Universal Battery Charger # CTEK56158 which you would plug into a standard outlet. You can maintain that charge when driving by running # 10-1-1 wire along with 40 amp circuit breaker...
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  • Can Batteries be Run in Parallel and Used With Converter Box
  • You can absolutely run two 12 volt batteries in parallel and use them with your converter box. Running batteries in parallel will maintain their 12 volt output but they will just have a higher capacity to be run for a longer time. If you take a look at the accompanying diagram you can see exactly how to wire the batteries. A battery charger will still be needed to charge your batteries and the CTEK MULTI US 3300 12-Volt Universal Battery Charger w/ Pulse Maintenance # CTEK56158 is a...
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  • How to Power Enclosed Trailer Lights Off of 12V Battery
  • I can tell you exactly what you'll need to power your enclosed trailer's lights off of an independent 12V battery, though there isn't an adapter. You first need to mount the battery with a battery box for 12V batteries like # TLA7708R, and then use junction box # 38656 to tap into your trailer's 7-way. You will also need ring terminals # 44-5310A, and wire # 12-1-1 to run to each light, and to turn the lights on, a light switch such as the Pollak rocker switch # PK34308 or toggle...
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  • Trobleshooting Lid Lift Function on Maxxair 7500 Fan
  • Since the lid motor on your MaxxAir 7500 vent with powered lift # MA00-07500K is operating but the lid stops midway unless you give it some manual assistance the issue is either power-related or the result of a damaged operator mechanism # MA10-20281K-1AF. My tech contact at MaxxAir said that the behavior you describe is often related to low available input power. The vent will detect if the incoming operating voltage is low or marginal and it will stop the lid opening. This is a safety...
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  • Landing Gear on Keystone Raptor Slips and Has Trouble Raising the Trailer
  • The first thing I would check is the condition of the battery that powers the landing gear on your trailer. If the battery is starting to go or doesn't have enough charge then the first step I recommend is replacing the batter or charging it with an AC charger than also can recondition it such as # CTEK56158. If the landing gear still seams to struggle then changing out the motor could help, especially if the landing gear was working fine up until you started having issues. But if...
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  • Can a Battery for an Electric Winch be Mounted Inside an Enclosed Trailer
  • You can put a battery inside the trailer but you would want to place it in a box of some kind since batteries have gases and chemicals in them. We have different battery boxes depending on the size you will need. I have included a link to them for you. You can run a wire to get a maintenance charge via the 12 volt circuit in the trailer wiring. However, it will not charge up the battery. The wiring is too small and most vehicle alternators are not strong enough to push back the amperage...
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  • Water Tank Heaters for Well Insulated 30 Gallon Tanks on a 2017 Ford E450 Box Van
  • ThermaHeat RV Holding Tank Heater Pad # 277-000164 or any of the others needs to be in direct contact with the tank so you would need to clear away anything that is in the way of making that direct contact. Given the amount of insulation you have you would most likely be fine with a smaller pad such as # 277-000163 which is longer at 25 inches but narrower at 7-1/4 inches. But considering what you will be doing I strongly recommend having a spare battery with you as well as an AC charger...
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  • Recommended Trailer Battery Charging and Controller for 80 AH Battery
  • To run a charge wire from your tow vehicle to your trailer battery, you will want to use 10 gauge wire # 10-1-1 along with a 40 amp circuit breaker # 9510 and run that wire to your 1 o'clock trailer connection pin on your bumper connection. Then you will want to make sure your trailer 7-way also has a wire running to the trailer battery positive terminal that has a diode like the Roadmaster Single Park Light Diode # RM-690 to prevent back feeding power. This combination will give you...
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  • Trailer Hitch, Brake Controller, And Wiring Recommendation For 2014 GMC Savana Van With No Tow Pkg
  • I will start with the trailer hitch for your 2014 Savana. From my research I found the Savana can tow a trailer up to 10,000 lbs. The trailer hitch I recommend is the Draw-Tite Ultra Frame Trailer Hitch Receiver, part # 41946. This is a Class V hitch and has a 2 inch receiver opening. You might be interested in etrailer ball mount kit # 989900. It comes with 2 ball mounts; one with a 3/4 inch rise or 2 inch drop and one with a 2-3/4 inch rise or 4 inch drop. It also includes a 1-7/8...
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  • Correct Wiring Installation for aTrailer Breakaway Kit
  • If you are installing a trailer breakaway kit like # C52041, then you can use the 12-volt auxiliary power wire to help provide a maintenance charge on your breakaway kit's battery. A breakaway kit that does not have an onboard charger will have to use 3 wires to operate. One red or black wire (12-volt power) that will come off the 12 volt auxiliary circuit. This wire will keep a maintenance charge on the battery when connected to your vehicle. A white wire that will be the ground and...
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  • Can a Trailer Mounted Battery be Charged Up Using a Breakaway Battery Charger
  • A charger such as # 20011 will not be able to charge up a regular battery, only small breakaway batteries. The issue is that the wiring on the trailer and vehicle is not large enough and the alternator is not strong enough (on most vehicles) to push back the amperage required to charge up a battery. At best it can only maintain the charge level of the battery. Also, you will want to disconnect the breakaway battery from the larger battery. Otherwise it will just drain it and also shorten...
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  • Charging System for 6 Volt Battery and 12V Battery
  • The CTEK MULTI US 3300 12-Volt Universal Battery Charger w/ Pulse Maintenance # CTEK56158 is only a 12V charger that will allow you to connect the lead wires to the battery terminals with either spring clamps or ring terminals. If you need a 6V charger, you would instead use the CTEK UC 800 6-Volt Battery Charger w/ Pulse Maintenance # CTEK56191 or the NOCO Genius UltraSafe Battery Charger and Maintainer - 6V/12V - 0.75 Amp # 329-G750. If you are wanting to charge between the two...
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  • 4-Flat Wiring Harness for 2016 Ford Transit T250
  • The Curt T-Connector Vehicle Wiring Harness # C56327 will not have anything to do with charging batteries. It simply gives your 2016 Ford Transit T250 a 4-flat harness to power your trailer's lights. To charge your camper's batteries you can simply use a 12V battery charger such as the CTEK # CTEK56158.
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  • Charge Current of Tekonsha Two Stage 12 V DC Battery Charger
  • The Tekonsha Two Stage 12V DC Battery Charger # 2024-07 has a maximum charge current of 1.2 amps and is designed to charge breakaway batteries. Instead you may want to look into a battery charger such as the CTEK # CTEK56158 which has a maximum charge current of 3.3 amps for your accessories but you will need to use a dedicated battery for your breakaway such as the Hopkins Engager Push-To-Test Trailer Breakaway Kit w/ Built-In Charger # 20099.
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  • Options for Charging Accessory Battery on Trailer and Making Sure Battery Doesnt Overcharge
  • If you do not want to disconnect the vehicle connector from the trailer connector when you are not towing, you can install a Tow Ready Battery Isolation Solenoid # TR118665 on your tow vehicle. This solenoid will shut off the 12V feed from your vehicle battery to your trailer's battery when the vehicle's ignition is off. I have attached a review video of this solenoid for you. I recommend checking to see if your solar charger has a regulator to ensure that the panel doesn't overcharge...
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Info for this part was:

Test Fit:
Joe V
Expert Research:
Michael L
Video by:
Andrew K
Expert Research:
Patrick B
Expert Research:
Michael H
Installed by:
Jeff D
Expert Research:
Jameson C
Expert Research:
Adam R
Expert Research:
Rachael H
Expert Research:
Jeffrey L
Video Edited:
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