1. Battery Charger
  2. CTEK Power Inc
  3. Car/Truck/SUV
  4. Motorcycle
  5. Trailer
  6. Lawn Mower
  7. Jet Ski
CTEK MULTI US 7002 12-Volt Universal Battery Charger w/ Pulse Maintenance and Backup Power

CTEK MULTI US 7002 12-Volt Universal Battery Charger w/ Pulse Maintenance and Backup Power

Item # CTEK56353
lowest price pledge
Our Price: $157.07
You Save: $11.22
Battery Charger
This item qualifies for Free Shipping
Shipping Weight: 3 lbs
In Stock
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

Customer Photos

Need help with installation?
Locate installers near me
This powerful, all-weather eight-step charger uses a patented, pulse-maintenance system to charge, maintain and help recondition 12V batteries. Backup power supply allows you to change vehicle batteries without losing complicated program settings. Call 800-298-1624 to order CTEK Power Inc battery charger part number CTEK56353 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 7002 12-Volt Universal Battery Charger w/ Pulse Maintenance and Backup Power. Battery Charger reviews from real customers.
  • All Info
  • Reviews (82)
  • Q & A (478)
  • Photos
  • Why etrailer?

CTEK Power Inc Battery Charger - CTEK56353

  • Car/Truck/SUV
  • Motorcycle
  • Trailer
  • Lawn Mower
  • Jet Ski
  • Battery Charger
  • 12V
  • CTEK Power Inc
  • Wall Outlet to Vehicle Battery
  • Charges/Maintains
  • 150 Ah

This powerful, all-weather eight-step charger uses a patented, pulse-maintenance system to charge, maintain and help recondition 12V batteries. Backup power supply allows you to change vehicle batteries without losing complicated program settings.


  • Reliable, maintenance-free, 8-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
    • Makes use of an internal power supply during battery changes to preserve your vehicle settings
    • Restores the power capacity of stratified batteries w/ special Reconditioning Mode
  • 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
  • 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


  • Application: most starter and deep-cycle, 12V, lead-acid batteries - including wet, MF, AGM and most gel batteries
    • Charges batteries w/ capacities from 14 Ah - 150 Ah
    • Maintains batteries w/ capacities up to 225 Ah
  • Charge cycle: 8-step, fully automatic charger w/ pulse maintenance and Reconditioning Mode
  • Dimensions: 8-1/2" long x 3-1/2" wide x 1-7/8" 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/ M10 (10.5-mm) eyelet terminals
    • Owner's manual
    • Protective case
  • 5-Year warranty

CTEK MULTI US 7002 bulk charging time chart

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

CTEK MULTI US 7002 wiring cable w/ 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.

CTEK MULTI US 7002 wiring cable w/ clamp terminals

CTEK MULTI US 7002 Charging Process

Superior and safe, this eight-step process (plus Supply Mode) 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. Soft-start stage tests the battery to see whether it can be charged. If the battery is unable to hold the initial charge, the unit goes into Error Mode, alerting you that your battery must be replaced.
  3. Bulk stage is the main charging phase. This stage accounts for 80 percent of the charging process and uses a constant charge level.
  4. Absorption stage completes the charge (to virtually 100 percent) using diminishing current to prevent battery damage.
  5. Analysis stage kicks in if the pre-set maximum time needed for absorption is exceeded. The unit measures the battery voltage and stops the charging process, automatically lighting an error indicator if the battery is faulty.
  6. Recond mode is used to recondition a battery that has been severely discharged. After the battery has been charged in Normal Mode and analysis has been completed, the charger reconditions the battery w/ a constant current of 1.5A and a maximum voltage of 15.7V for up to 4 hours.
  7. Float-maintenance stage maintains a constant voltage of 13.6V during the first 10 days.
  8. Pulse-maintenance stage begins after the 10 days of float maintenance. This long-term stage 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.

Supply mode - available only on this CTEK model - provides backup power to your vehicle while the battery is being changed. No more tiresome system resetting after battery changes.

CTEK US 7002 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! CTEK's low ripple rate eliminates the danger of damaging electronic devices connected to the battery, and it prolongs the battery's service life. If you must replace your battery, the Supply Mode provides backup power to your vehicle's systems when you remove or replace the battery, sparing you the hassle of resetting your controls.

Closeup of indicator panel w/ descriptions

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

Additional Specs:

  • Model: 56-353 (MULTI US 7002)
  • 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
  • Maximum current demand 2.0A rms (at full charging current)
  • Charging current: 7A max
  • Back current drain: less than 3 mAh per month
  • Charging voltage: 15.7V
    • Nominal charging voltage: 12V
  • Ripple wave: less than 2 percent variance (max 150 mV rms, max 0.3A)
  • 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

56-353 CTEK MULTI US 7002 12V 8-Step, Pulse-Maintenance, Universal, Lead-Acid Battery Charger

Installation Details CTEK56353 Installation instructions

Customer Reviews

CTEK MULTI US 7002 12-Volt Universal Battery Charger w/ Pulse Maintenance and Backup Power - CTEK56353

Average Customer Rating:  4.9 out of 5 stars   (82 Customer Reviews)

This powerful, all-weather eight-step charger uses a patented, pulse-maintenance system to charge, maintain and help recondition 12V batteries. Backup power supply allows you to change vehicle batteries without losing complicated program settings.

- CTEK56353

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

Still works great, no issues.
Mike N - 04/03/2016

- CTEK56353

Works well & the display provides a good status of progress being made in charging. I used on my RV with 3 12V batteries

- CTEK56353

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.

Scott - 02/28/2019

- CTEK56353

Product is as advertised and customer service/delivery is great. I would recommend this company to anyone

- CTEK56353

I purchased this same unit about 10 years ago and have had good experience with it. It is still in good working order so when I developed the need for an additional unit I opted for the same mfg. My only concern is ordering from an authorized distributor in order to maintain the mfg warranty. Ordering from etrailer web site was a little confusing at the point of placing the order and I wasn’t sure if the order was actually submitted until I received a confirmation later that day. Delivery time was out the door same day. I would order from this distributor again in the future.

- CTEK56353

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.

- CTEK56353

After destroying several batteries with other brands, I only use CTEK .

- CTEK56353

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.

- CTEK56353

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.

- CTEK56353

Without a doubt the best charger I have ever owned. I use this charger on all three of my vehicles. Plus my motorcycle and garden tractor. Note: Just wish there was an accessory that allowed me to charge both batteries on my diesel truck at the same time.

- CTEK56353

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.

- CTEK56353

Like that it has connections to charge various types of batteries. First use was a camper battery and it charged quickly. etrailer has always provided good service also.

- CTEK56353

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.

- CTEK56353

Been using this charger for a year now, and it has worked like a charm. money well spent

- CTEK56353

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

- CTEK56353

This little device has been a game changer.....easy to install, easy to use - recommend!

- CTEK56353

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 !!!

- CTEK56353

Great charger at a great price. Delivery was as scheduled complimenting the great service.

- CTEK56353

Very good product at very good price

- CTEK56353

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

- CTEK56353

Works well

- CTEK56353

Good product

- CTEK56353

Excellent product but Made In China.

- CTEK56353

- CTEK56353

Show More Reviews

Ask the Experts about this CTEK Power Inc Battery Charger

  • How to Install 7-Way on 2020 Hyundai Palisade for Brake Controller
    The best option we have right now (August 2019) is for you to install the 4-way on your 2020 Hyundai Palisade from Hyundai as we don't have an option yet, and then convert it to a 7-way with the part # ETBC7 which comes with everything needed to install a brake controller and convert the 4-way to a 7-way. For a brake controller I would recommend the Prodigy P3 Brake Controller part # 90195. This is our best selling brake controller because of how well it works and how easy it is to setup....
    view full answer...
  • Adding a Second Trailer Battery to Power Trailer Accessory Lights
    While you can add a second battery to power lights, this is going to require a second, 12 volt auxiliary battery; this is the same concept you were thinking of but a breakaway system battery isn't going to have the power or amp hours needed for your lights. Doing this is fairly simple as you will just need to start by mounting Battery Box # 329-HM318BKS to your trailer frame with some self-tapping screws and washers, like you can see in the linked video review of this box. Then to charge...
    view full answer...
  • Can Trailer Batteries be Wired in Series to Produce 48 Volts
    If your boat motor requires 48 volts then yes you could do what you described by wiring the 6 volts in series to each other and then wiring the two additional batteries in series to that bank and to each other. That would give you a total of 48 volts but you should for sure verify what voltage your motor needs to run on. I attached a picture that shows difference between wiring batteries in series and in parallel.
    view full answer...
    Image 1 for
  • Battery Maintainer Recommendation for Breakaway Battery for Trailer
    Maintaining the battery with the charger part # CTEK56353 would be a great option to allow you to not have to keep replacing batteries. This will keep the battery topped off and in good shape.
    view full answer...
  • Battery Management System for Camper in GMC Sierra That Can Charge from Solar/Alternator/Shore
    Your best option is the The Manager30 Battery Management System with Lithium Profile # 331-BMS1230S2-NA. It does everything you need it to do, is perfectly compatible with your setup and batteries, and is an all-in-one solution that eliminates the guesswork of trying to piece together something that would most likely cost about the same. I attached a review video and an install video for this for you to check out as well.
    view full answer...
  • Shore Power and DC Battery Chargers for Trailer-Mounted Battery Powering Electric Jack
    For the battery on your trailer that powers your electric jack the best way to charge it fully is with a shore-power AC charger like the CTEK # CTEK56353. Then while you are on the road the maintenance level 12V feed from the Ram's 7-way will keep it topped off. I own one of this particular charger and mine has worked great for almost 4 years of non-stop use. The trouble with running cables from your truck's battery or alternator all the way to your trailer battery is that they have...
    view full answer...
  • Recommended Vehicle to Trailer Battery Charger with Solar Power Option
    The CTEK battery charger # CTEK56353 is a great charger for when you have shore power, but will not work for a vehicle to trailer battery charger. To charge your trailer battery from your Outback 2.5i, you will need a different type of charger. I personally prefer the Redarc In-Vehicle BCDC Battery Charger - Dual Input # 331-BCDC1240D which allows you to charge your battery while your vehicle is not running. This unit has the ability to charge at 40 amps, use solar, and isolate your...
    view full answer...
    Image 1 for
  • Troubleshooting Battery Depletion in 2003 Sun Valley Roadrunner 130 Travel Trailer
    Travel trailers like a 15-foot Sun Valley RoadRunner M-130 typically have an on-board battery that can receive a trickle charge from the tow vehicle 7-way's 12V feed. This will maintain a well-charged battery while you're en route to your destination but will not re-charge a depleted one. The best way to ready the trailer for a trip is to use a shore-power charger like # CTEK56353. I have owned one of their chargers for about 6 years and mine has worked perfectly in my 24/7/365 application...
    view full answer...
  • Will 7-Way Installed in Truck Bed Provide Power to Charge Battery of Truck Bed Camper
    The accessory power wire from the 7-way doesn't have enough power to charge a depleted battery. It can maintain a fully charged battery, but won't recharge one that's dead. To recharge the battery, using shore power and a charger like the CTEK # CTEK56353 is the best way to go. To provide the connector in your truck bed, I'd recommend the Hopkins # 41157. You can see an installation video by clicking the provided link.
    view full answer...
  • How to Charge Trailer Battery Through 7-Way Connector
    If your battery is already connected to the 12V power circuit then it is already receiving a charge form the battery/alternator on your 2000 Chevy Silverado 1500 (see attached pictures). With that being said, since your trailer battery is far enough away from your alternator it is just receiving a trickle charge that will only charge it slowly and not up to 100% capacity due to the voltage drop. To remedy this you either need to use a charger like the CTEK MULTI US 7002 # CTEK56353 for...
    view full answer...
    Image 1 for Image 2 for
  • Can 5 Trailer Batteries be Wired Together to Still Put Out 12 Volts
    In series wiring increases the voltage of the battery output so 5 batteries wired in series would not be 12 volts but there is a different option that will work. Instead parallel battery wiring keeps the voltage the same. So 5 batteries wired in parallel would still give you 12 volts plus all of the amperage of each battery added together. I attached a diagram that shows how either wiring setup looks.
    view full answer...
    Image 1 for
  • Testing Electric Trailer Brakes Using Direct Battery Power
    You can indeed test a trailer's electric drum brakes by directly applying +12V power from a fully-charged battery. You can apply this power to the hot and ground contacts on the trailer's plug (see photo please) or to an individual brake assembly's two wires. With a well-charged battery delivering power you should hear gentle humming from the brake magnets and feel resistance as you try to rotate the hub. Please note that a battery CHARGER like # CTEK56353 cannot be used to do this...
    view full answer...
    Image 1 for
  • Will Towing Vehicle Provide Charge To Trailer Battery Through Trailer Connector
    The battery on the trailer will not charge if it is attached to the 12V power wire from the towing vehicle. It will provide a small amount of current that helps maintain the current charge of the trailer battery. I recommend using a battery charger like the CTEK MULTI US 7002 12-Volt Universal Battery Charger, part # CTEK56353. This charger features pulse maintenance and will not overcharge the battery like many of the common chargers do.
    view full answer...
  • Recommendation to Convert Generator Power to 12V 7-way Trailer Connection
    Generators do not typically have a 12 volt power converter, so I recommend using the Battery Charger and Maintainer # CTEK56353 and splicing the connector that would go to the battery terminals into a 7-way connector like # 30717. You will connect the black end of the charger wiring to the white wire of the 7-way and the red wire of the charger wire to the black wire of the 7-way. This will give you the 12V power to your trailer from your generator through the trailer plug connection. You...
    view full answer...
  • Can Deep Cycle Battery on 5th Wheel Trailer be Used to Operate Landing Gear Jacks
    You should be able to operate your landing gear jacks off of a deep cycle battery on your 5th wheel trailer. You said that you just bought a new deep cycle battery so it makes me wonder if you have completely charged it. If you have been using your battery while camping then it is possible that it is simply depleted and doesn't have enough power to operate your landing gear. You will need to use the battery in your vehicle to operate your jacks if the battery in your 5th wheel is dead....
    view full answer...
  • Can a Trailer Battery be Charged with a 7-Way Trailer Connector
    The 12 volt power circuit of your 7-way would not be able to charge a dead trailer battery, but it can put a light maintenance charge on it so that it stays topped off while you are travelling. The circuit is most likely protected by a 40 amp fuse, but that does not mean that it can provide 40 amps of charging power to your battery. That just means that if something tried to draw more than 40 amps the fuse would pop. For a charger that you could use to charge your battery when it is...
    view full answer...
    Image 1 for
  • Battery Charger Recommendation for Battery Banks that are In Series to Produce 12 Volts
    Since your batteries are wired in series and have an output of 12 volts a standard 12 volt battery charger like the CTEK # CTEK56353 would work well. You'd attach the clamps of this charger to the battery outputs so that it applies 12 volts to the in-series 12 volt setup. I confirmed that this would work well with my contact at CTEK.
    view full answer...
  • Powering Fans in a Horse Trailer Without Leaving Trailer Connected to the Truck
    To power the fans on your horse trailer when the trailer is disconnected from your truck, you will need to add a battery to the trailer. I recommend using a battery box and mounting the battery on the frame of the trailer so you can easily ground the battery to the frame. Once you have the battery installed, you will want to run the wire for the 12 volt circuit on the trailer side connector to the positive battery terminal. Next, connect the power wires from the fans to the battery....
    view full answer...
  • Types of Battery Chargers for Auxiliary Battery on Dump Truck/Trailer
    We do offer battery chargers, including AC-powered unit like NOCO Genius # 329-GEN2 and DC-powered types like Redarc # 331-BCDC1225D, as well as Solar panel chargers like # PTW2997 that help maintain your auxiliary battery whenever sunlight is available. The vehicle wiring kits we sell are generally limited to passenger vehicles to allow them to tow recreational trailers. If you are looking for a heavy-duty wiring kit to deliver power to your dump bed motor this would best be sourced...
    view full answer...
    Image 1 for
  • Can Trailer Battery Be Charged from Vehicle, Solar Panel, and Wall Outlet Charger
    Basically you'd want the Redarc Dual Battery Charger # 331-SBI212D to cover the solar panel and alternator charging of the battery and then when wanting to charge the battery from shore power you'd want a charger designed for that like the # CTEK56353. You can install the quick connects of this kit to the battery and easily connect the charger when needed. This would not require the removal of the D250S either. Basically it would just be a matter of letting the trailer charger setup charge...
    view full answer...
  • How to Charge 12 Volt Trailer Battery
    The power that the 12 volt battery on your trailer receives from the 7-way connector is enough to maintain its charge, however it will not be sufficient for charging the battery back up after use. The voltage drop you experienced from charging your phones and drone batteries was simply maintained on during your drive home. To be able to fully charge the trailer battery, I recommend using the CTEK Multi US 7002 12-Volt Universal Battery Charger # CTEK56353. This can be used to fully...
    view full answer...
  • Adding a Battery to an Enclosed Trailer with a Breakaway Battery Already Installed
    To charge a battery for use in your trailer you will need to either use the CTEK MULTI US 7002 12-Volt Universal Battery Charger w/ Pulse Maintenance # CTEK56353 when you have your trailer parked, or use the Dual Battery Charger # 331-BCDC1240D. The second option will allow you to provide a maintenance charge from your tow vehicle and add a Solar Panel # TLA7713 (see attached picture). This will trickle charge your battery which will not be as quick as the first option but will allow it...
    view full answer...
    Image 1 for Image 2 for
  • 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...
    view full answer...
    Image 1 for
  • Can I Charge the Battery for a Winch On My Trailer From My 2016 Ford F-150 While Driving
    I do have a few different options for you, but charging your trailer battery from the battery on your 2016 Ford F-150 while driving is not what I recommend doing. The 7-Way on your F-150 does not have the capability to charge a large enough battery to run your winch. The only kind of battery that it can charge is something like a small breakaway battery. You would have to find wiring that is big enough to carry that much power and run it straight to the battery on your trailer. The first...
    view full answer...
  • Does the Battery Charger in My Truck Camper Shut Down When Fully Charged and What to Do if Not
    I will be glad to try to help. I am guessing here, but I believe what you are saying is that your truck camper has a battery charger that functions when you are connected to shore, household, power. If this is the case, you should contact the camper manufacturer to find out if the charger has a system for checking the battery charge level and shutting down when the battery is fully charged. I imagine the charger in the trailer is set up this way. If the manufacturer cannot provide this...
    view full answer...
  • Methods to Charge & Maintain Trailer-Mounted Winch Battery on Car Hauler Trailer
    A great way to keep your trailer-mounted battery well-maintained when shore power is available is to use an AC-powered charger/maintainer like the CTEK products, such as # CTEK56353. This unit automatically switches from charge mode to maintenance mode as your battery is topped off. I have owned and used one of their chargers for almost 6 years. Mine continues to perform perfectly even after almost 6 years of non-stop 24/7 duty charging motorcycle, auto and lawn mower batteries.
    view full answer...
  • Charging Dump Trailer Battery Recommendations
    The CTEK 12-Volt Universal Battery Charger w/ Pulse Maintenance # CTEK56353 is a charger that you'd use when the trailer is parked. It plugs into a wall outlet and will charge your dump trailer battery all the way up quickly. It would not be a charger that could charge the trailer battery as the truck and trailer are travelling down the road. I attached a review video for the charger for you to check out as well. If you wanted to directly charge the winch off your truck battery then...
    view full answer...
  • Parts Needed to Charge a Trailer Battery for a Winch
    First, the wiring on a trailer connector can provide a maintenance charge to a 12 volt battery on a trailer but it will not be able to fully charge it. The 12 volt circuit on a 7-Way is already circuit protected so a separate fuse or breaker should not be needed. There is a way you can provide a charge to the battery from the truck. You would need to equip the truck and trailer with separate single pole connectors independent of the 7-Way. For the trailer side, you would need Pollak...
    view full answer...

Do you have a question about this Battery Charger?

  • Why etrailer.com?

    At etrailer.com we guarantee:
  • Highest quality battery charger for the best price.

    Our Lowest Price Pledge ensures you will never overpay for the parts you need.
  • Real product know-how.

    We make sure that the products we sell are what we say they are, and that they work the way they are supposed to work. Get real advice from a real person who has the knowledge and expertise needed to solve your problem.
  • Most detailed, accurate battery charger information available.

    Because we take providing accurate product information seriously, we take our own detailed product photos, demo videos and installation videos, as well as verify measurements, instructions, and vehicle fit information.
  • Installations, made easy.

    We love helping people and have the most highly-trained customer service, hands-on experience, step by step videos and installation instructions.
  • Fast shipping.

    Your order is automatically routed to get out of our warehouse and to your door as quickly as possible. Receive free shipping on orders over $99.
  • Personalized service for life.

    We provide one-on-one, personalized service from the ordering process through the life of your product.
  • Trusted since 1946.

    We've been serving customers since our parts store first opened in 1946 and continue to be recognized by our customers, our vendors and third parties for exceptional service.
  • Returns Policy

    Need to return an item? No problem. Please read our Returns Policy for more information.

Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Robert G
Expert Research:
Robert G
Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee John H
Expert Research:
John H
Employee Adam R
Expert Research:
Adam R
Employee Jeffrey L
Expert Research:
Jeffrey L
Employee Andrew L
Video Edited:
Andrew L
Employee Wilson B
Updated by:
Wilson B
Employee Daron K
Updated by:
Daron K
Employee Noah M
Updated by:
Noah M

At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.

Product Experts Available Now!
Call 800-298-1624