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Accessories and Parts > Trailer Breakaway Kit > Accessories > Battery > Battery Charger > Hopkins


Trailer Breakaway Kit Battery Charger

Hopkins Accessories and Parts

ratingratingratingratingrating (15 reviews)


Code:   20011

Retail:$8.95

Price:$6.99


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Hopkins Accessories and Parts - 20011

Replacement Battery Charger for Trailer Breakaway Kits

  • Black wire is connected to the vehicle battery to get the charge
  • Red wire is connected to battery in the breakaway kit on the trailer
  • Blue wire is connected to the breakaway switch




Video of Trailer Breakaway Kit Battery Charger


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

Video install hopkins trailer breakaway kit battery charger 20011
Hopkins Trailer Breakaway Kit Battery Charger Installation

Video Transcript for Hopkins Trailer Breakaway Kit Battery Charger Installation

Today on this enclosed trailer were going to install part number 20011 from Hopkins. This is their trailer breakaway kit battery charger. Right now, looking at our trailer the way its hooked up is that it does not have a battery charger. It has a 12 volt power lead coming off the towing vehicle going straight to the battery that will charge the battery, but over time that could overcharge the battery, especially on a long trip. Were going to install our battery charger. The first step is we will go ahead and locate the wiring that comes off the battery charge from the towing vehicle and we will hook that up to the black wire.

Next we will go ahead and take the red wire and we will hook that up to the battery on the trailer, that way the battery will be getting a charge. Now the blue wire coming off the charger will go out to our breakaway switch. You can use a variety of different connections. In this case we will be using wire nuts. Once our connections are made we can take our charger and tuck it in next to the battery.

With that, that will finish it for our install of part number 20011 from Hopkins on this enclosed trailer.




Customer Reviews

Trailer Breakaway Kit Battery Charger - 20011

Average Customer Rating:  ratingratingratingratingrating4.9 out of 5 stars   (15 Customer Reviews)



- 20011

ratingratingratingratingrating by: Derek12/23/2013


I bought TR20048, and after about 2 years the charging circuit started malfunctioning. There are no replacement parts for TR20048. So I removed the original circuitry from the TR20048 and replaced it with 20011. 20011 does not have LED indicator lights, but it charges the battery without overcharging and is very inexpensive. 110988






- 20011

ratingratingratingratingrating by: Arthur03/14/2013


A simple low cost solution that is easy to install. Installation took about 20min. In my opinion every trailer from the factory should have these pre- installed but many don't and without one the small breakaway battery will charge at too high a rate and probably overcharge, both of which can shorten the life of the battery. 70657






- 20011

ratingratingratingratingrating by: A. Gale06/18/2011


It gives me peace of mind knowing that my trailer battery is being charged while I'm driving down the road on a trip since the trailer/battery sits most of the year. This item was easy to install. The harder part was the van wiring, connecting a wire to the van's trailer connection so that the charger thing could work. 17241






- 20011

ratingratingratingratingrating by: Phil D.06/03/2014


It took about 5 minutes to install this charger. I can't understand why trailers don't come with these from the manufacturer. Etrailer is great, and we'll be doing more business in the future. I have a few trailers, and I can't imagine needing anything that Etrailer doesn't carry. 134020






- 20011

ratingratingratingratingrating by: bob s04/25/2014


great little battery charger fit into breakaway box just fine. I use it on a double axle utility trailer. It will keep trailer break away battery charged up 127330






- 20011

ratingratingratingratingrating by: Bob P09/13/2013


I have installed the battery charger, and it seems to be working fine. I was impressed with the quick delivery and good packing. 99838






- 20011

ratingratingratingratingrating by: Dave09/07/2013


Good product at a good price. Excellent shipping price with fast delivery. 98808






- 20011

ratingratingratingratingrating by: Dan06/20/2011


speedy shipping and works GREAT, until next time thank you!!!!!!!!!!!!!! 17484






- 20011

ratingratingratingratingrating by: greg p05/19/2014


everything shipped quickly, and received as advertised 131266






- 20011

ratingratingratingratingrating by: John04/15/2013


Product was as advertised.....Easy to hook up. 76221






- 20011

ratingratingratingratingrating by: gene05/10/2011


recieved in good shape and what i wanted thks 13175






- 20011

ratingratingratingratingrating by: Bob Owen07/08/2013


Ad advertised...Easy install...quick sh ip 88399






- 20011

ratingratingratingratingrating by: Robert S06/25/2013


exactly what i need and at a great price 86105






- 20011

ratingratingratingratingrating by: Jim S.05/22/2013


This charger is well worth the money. 81478






- 20011

ratingratingratingratingrating by: Brandon04/04/2013


exactly as described 74145




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Ask the Experts about this Hopkins Accessories and Parts
Expert Answers about Trailer Breakaway Kit Battery Charger - 20011Do you have a question about this Accessories and Parts?


  • Trailer Break Away System Battery Charging Options for Hopkins Brake Master Break-Away Kit
  • You have two choices for charging that battery. You can certainly remove the battery and use CTEK MULTI US 3300 12-Volt Universal Battery Charger w/ Pulse Maintenance, # CTEK56158. These chargers are preferred over trickle chargers because the CTEK charger will not overcharge the battery and it will actually recondition the battery helping it to last longer. I have included a link to a video review and a link to the installation details for reference. Another option would be to use...
    view full answer...

  • Can a Trailer Break Away Battery be Charged from the 7-Way Trailer Connector
  • If you have a break away kit that does not include a charger, you can provide a charge to the battery using the 12 volt circuit or auxiliary circuit from the vehicle 7-Way trailer connector. However, using the 7-Way can overcharge a break away battery. It would better to add a charger designed for a break away battery like # 20011.
    view full answer...

  • Availability of Chargers for Trailer Breakaway System Batteries
  • We carry a Trailer Breakaway Kit Battery Charger that would be perfect for you, the part # is 20011. The black wire connects to the 12-volt power from the trailer connector, the red wire connects to the positive battery terminal on the breakaway battery, and the blue wire connects to the breakaway switch. This would be the easiest, most economical way of providing battery chargers for the breakaway systems on your various trailers. You will want to make sure that the batteries are...
    view full answer...

  • How Large Of Battery Can Hopkins Trailer Breakaway Kit Battery Charger # 20011 Trickle Charge
  • I contacted our representative at Hopkins and he informed me that the Trailer Breakaway Kit Battery Charger, part # 20011 can charge batteries of different sizes, even large batteries, it will just take a bit longer. He informed me that part # 20011 will trickle charge your regular 12 volt battery just fine. If you do have the vehicle battery connected directly to the battery on trailer it will keep sending power to the battery even after the battery is charged, which could be bad for...
    view full answer...

  • How Does a Break Away Battery Charger Wire Into a Trailer Break Away System
  • A break away switch, like # HM20010, has a pin it that when pulled out completes a circuit from the battery mounted on the trailer to the trailer brakes. This allows the battery to apply voltage to the trailer brakes to stop the trailer should it become disconnected from the tow vehicle. The charger, # 20011, receives 12 volt power from the tow vehicle on the black wire. It sends this power to the break away battery on the trailer to provide a maintenance charge along the red wire. The...
    view full answer...

  • How Long Will the Engager Trailer Breakaway Kit Battery Last Without a Charge
  • Battery life depends on so many factors that it is hard to quantify the life any given battery. I spoke with my contact at Hopkins and he stated that if the battery is stored outside he estimates a 3 to 6 month life span. If stored inside it will last a little longer and will most likely make it to 6 months. If the battery is not being charged via the 7-Way trailer connector regularly then it is recommended to charge the battery every 3 months using a battery charger like # CTEK56158. If...
    view full answer...

  • Trailer Breakaway Kit Battery Charger 20011 Operating Temps, Current Draw, Type of Charging
  • I spoke with a technical adviser at Hopkins, the maker of this charger and he said the safe operating temperatures for this Trailer Breakaway Kit Battery Charger, part # 20011, is between -20 degrees and 140 degrees Fahrenheit. The max current draw is 5 amps and uses a trickle charger, yet shuts down when the charger is full.
    view full answer...

  • Trailer Breakaway Kit Battery Charger Wire Functions
  • Each of the wires on the Trailer Breakaway Kit Battery Charger, part # 20011, have a specific function, but none of them are grounding. The black wire goes to your vehicle battery, the red wire goes to your trailer breakaway battery, and the blue wire goes to your break-away switch.
    view full answer...

  • How to Charge Two 12 Volt Batteries on an RV Towed by a Ford F-150
  • The 12 volt circuit on a 7-Way trailer connector can provide a maintenance charge to a 12 volt battery but it will not be able to fully charge it because the wiring for a 7-Way is too small to carry the current required. What you can do to charge the batteries on the RV is to first install a battery isolator, # TR118665, in the truck. You will need to attach one terminal to the positive on the truck battery and then connect the center terminal to a 12 volt ignition source (something...
    view full answer...

  • Is a Battery Isolator Needed for 7-Way Wiring Installation
  • The 12-volt power source at the 7-way connector is typically protected by a 40 amp fuse or breaker. This circuit is usually tied directly to the battery, with the fuse or breaker installed inline. This circuit is not isolated. Because this circuit can remain live even when the ignition is switched off, we recommend unplugging the trailer when the vehicle is not running to avoid the battery from being discharged. If you wish to avoid this problem altogether, using an isolator like part #...
    view full answer...

  • Trailer Brake Controller Only Works with Pin Pulled on Trailer Breakaway Kit
  • This does sound like a short or a ground issue. It could also be corrosion inside or on the trailer connectors. You can test the charger by applying 12 volts of power to the power wire on the charger and then testing the output side to the breakaway battery on the trailer using a circuit tester like # 3808 to see if it is applying power to the system. Make sure that all ground from the main trailer connector, to the breakaway system, and on to the brake magnets are all grounded to clean...
    view full answer...

  • Do Trailer Breakaway Batteries Apply Enough Power for a Dual Axle Trailer with 4 Brake Assemblies
  • Any battery that is used in a breakaway system on a trailer needs to be able to sustain full braking power to the trailer brakes for at least 15 minutes to be in compliance with various laws in regions that require breakaway kits. The batteries we sell meet the requirements and where designed for that purpose for 2 axles. Always make sure that brake away batteries are fully charged before using them. The Engager Trailer BreakAway Kit, # 20099, is our most popular option. It comes with...
    view full answer...

  • Installation Direction For Trailer Breakaway Kit Battery Charger, part # 20011 on a 2013 GMC Sierra
  • When installing the Hopkins Trailer Breakaway Kit # 20011, the black, red and blue wire are attached with the following procedure. The black wire is connected to the black wire in the battery box on the trailer. The red wire is hooked to the positive post (by itself) of the battery on the trailer and the blue wire is spliced to the blue wire from the breakaway switch. I have attached a FAQ article covering breakaway kit installations as well as a brief installation video. I can...
    view full answer...

  • Will the Hopkins Trailer Breakaway Battery Charger Work for an Auxiliary Battery on a Trailer
  • Yes, you can use the Hopkins Trailer Breakaway Kit Battery Charger, # 20011, with the motorcycle battery on your motorcycle trailer. Like you said, you would simply tie-off the blue wire since it will not be used. This charger will maintain the charge on your battery and even provide a small charge when you are connected to the tow vehicle. The benefit of adding this charger to your battery is that the charger will stop sending power to the battery once the battery is fully charged....
    view full answer...

  • Trailer Breakaway Kit Operation and Installation Information
  • There are several components to a breakaway system. The pin should be attached to a metal cable that is plugged into a small switch usually located on the frame near the coupler. I attached an FAQ article that details everything about these systems for you to check out. Typically the battery is enclosed in a case that will have a tester that will tell you the condition of the battery. Check out the Engager Trailer BreakAway Kit # 20099 to see one like this. This one also has a built...
    view full answer...

  • Need for Charger on Battery on Trailer Break-Away System
  • I strongly recommend using the charger. The charger, like part # 20011 will protect the break away battery from overcharging or charging too quickly. The charger is a small investment, and it is easy to install. If you should decide that you are interested in the charger, it would wire as follows: the black wire would connect to the 12-volt supply circuit off of the 7-way, the red wire attaches to the positive terminal of the break away battery, and the blue wire connects to the break...
    view full answer...

  • Will the Trailer Break Away Battery Charger Work with a 12 Volt 5 Amp Recahrgeable Breakaway Battery
  • I spoke with my contact at Hopkins and the Trailer Breakaway Kit Battery Charger, item # 20011, should work with your 12 volt, 5 amp, rechargeable breakaway battery. We have a detailed description on how to install a breakaway kit with charger in the second section of our Breakaway Installation page (see link).
    view full answer...


Expert Answers about Trailer Breakaway Kit Battery Charger - 20011Do you have a question about this Accessories and Parts?



Info for this part was:


Installed by:
Joe V

Photos by:
Jackie C

Video by:
Andrew K

Expert Research:
DeAnne T

Expert Research:
Michael H

Expert Research:
Reno H

Expert Research:
Jameson C

Expert Research:
John H

Video Edited:
Dustin K

Photos by:
Jim W

Expert Research:
Lori W

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