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Trailer Breakaway Kit Battery Charger for 12V, 5-Amp Battery
Hopkins

Trailer Breakaway Kit Battery Charger for 12V, 5-Amp Battery

Part Number: 20011
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20011 - Battery Charger Hopkins Trailer Breakaway Kit
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This battery charger pulls just enough power from your vehicle when your trailer is hooked up to make sure your breakaway battery stays charged and ready to go in case a disconnect ever occurs. Compact enough to fit inside your breakaway battery box. 1-800-940-8924 to order Hopkins accessories and parts part number 20011 or order online at etrailer.com. Free expert support on all Hopkins products. Great prices and Fastest Shipping for Trailer Breakaway Kit Battery Charger for 12V, 5-Amp Battery. Accessories and Parts reviews from real customers.
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  • Reviews (50)
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Hopkins Accessories and Parts - 20011

  • Trailer Breakaway Kit
  • Battery Charger
  • Hopkins

This battery charger pulls just enough power from your vehicle when your trailer is hooked up to make sure your breakaway battery stays charged and ready to go in case a disconnect ever occurs. Compact enough to fit inside your breakaway battery box.


Features:

  • Charges your breakaway battery when your trailer is connected to the tow vehicle
    • Works with 12V, 5-amp batteries
  • Fits inside your breakaway battery box
  • Constructed of impact-resistant plastic


Specs:

  • Splice-in wire length: 18"
  • Battery connection wire length: 10"
  • Limited 90-day warranty


Note: A breakaway system is required by law in most states for trailers that are equipped with electric brakes and have a GTW of at least 3,000 lbs.


Quick Tips:

  • When you store your trailer, be sure to keep the pin plugged into the breakaway switch. If the pin's removed for an extended period of time, dirt and moisture can get into the switch and cause corrosion that could keep it from activating when you need it.
  • A breakaway system needs to be able to apply the trailer brakes fully for at least 15 minutes. In general, the heavier your trailer, the higher amperage battery you'll need for the breakaway.


20011 Trailer Breakaway Kit Battery Charger




California residents: click here


Customer Satisfaction Score:


Customer Reviews

Trailer Breakaway Kit Battery Charger for 12V, 5-Amp Battery - 20011

Average Customer Rating:  4.8 out of 5 stars   (50 Customer Reviews)

This battery charger pulls just enough power from your vehicle when your trailer is hooked up to make sure your breakaway battery stays charged and ready to go in case a disconnect ever occurs. Compact enough to fit inside your breakaway battery box.

by:

simple, sealed, haven't used it yet put pretty sure its just a few diodes molded in plastic with pigtails to prevent back-draining and overcharge, seems pretty robust



by:

Have not installed the charger yet, however it appears to be of good quality



by:

Great little electric brake battery charger. Easy install. Fast shipping and a great price. Thanks etrailer. Definitely buy from etrailer again.

Eloi D. profile picture

Eloi D.

5/11/2021

After a year works like the day I installed it.



by:

Great product for horse trailers like mine whose manufacturer was too cheap to include. Easy install and wires are marked where they go. Fairly priced too.

John profile picture

John

10/30/2018

Product working perfectly after 1 year. No complaints.



by:

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.



by:

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.



by:

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



by:

Still working great - just checked battery voltage after being parked a few days: 12.90 on the SLA alarm-type battery, so it's certainly working.

Always forgot to maintain, or even check the last battery - have no idea when it actually died. Wiring in this regulator ensures that it will have a much better chance of actually working IF I ever need it to. Lets hope not. ;)



by:

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.



by:

Easy installation. Durable connectors. Has worked great. Would highly recommend this product.



by:

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.



by:

I like your website its got everything I need for my trailers and will come back and order again. Couldn't find any of these products locally found everything on etrailer.com. Great site.



by:

Works great! Easy install!



by:

Does not come with any instructions, so get the wire coding off the internet here.
Tiny, will be easy to mount in the battery box.



by:

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



by:

Installed easily with instructions provided.



by:

GREAT SERVICE AND SUPER PRICE. THANKS ETRAILER



by:

Excellent experience and communication, great product and instructions



by:

Still working great !!

Bill G. profile picture

Bill G.

12/29/2017

still working as it should



by:

Received on time, installed easily, only time will tell if it dies its job. Thank you



by:

Does what it's supposed to. Easy to ins tall



by:

Olivia M . was great. She is a great asset to your business.



by:

I just received it. Looks good, was delivered as promised.



by:

Inexpensive solution to ensure your battery doesn't overcharge.



by:

A+


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See what our Experts say about this Hopkins Accessories and Parts

  • How to Prevent Trailer Breakaway System Battery from Overcharging and Back Feeding Into Tow Vehicle
    The correct way to fix this would be to install a battery charger like # 20011 on each of your break-away systems. This is a reasonably priced option that will prevent the overcharging of your breakaway battery and will also prevent the back feeding your describe. The installation is simple, as you can see in the linked video.
    view full answer...
  • Converter to Allow Fridge to Draw Power from Battery or RV Service Power
    What you'd want is a converter/smart charger like the Progressive Dynamics part # PD4060K which you'll wire your battery, RV service power supply, and fridge and it will allow you to charge the battery and draw from the RV power source when it's plugged in.
    view full answer...
  • Can Trailer Breakaway Kit Battery Charger 20011 be Used with Dexter EOH
    To wire in the Trailer Breakaway Kit Battery Charger # 20011 you'd run the black wire to the 12 volt accessory circuit of the trailer wiring, the red wire to the battery in the breakaway switch and the blue wire breakaway switch. The 12 volt accessory circuit is probably already ran to the trailer's battery but it's okay for it to also run to this battery charger as well by adding a splice to it.
    view full answer...
  • Should The Trailer 12 Volt Hot Wire Be Connected To Hot Wire On Vehicle 7-Way?
    A Diode # RM-690 can be used to prevent battery power from your trailer traveling to your tow vehicle. This diode is rated up to 85 amps which is more than the charging system on your vehicle is capable of providing. Having it connected hot to hot allows you to use your vehicle power to charge the battery and also power any lights or electric jacks off your vehicle when the trailer battery is dead. If your trailer only uses the power for a breakaway battery you can instead us the Charger...
    view full answer...
  • Hopkins Breakaway Battery Charger Output Specs and Compatibility with 12V 5aH Battery
    The Hopkins Trailer Breakaway Kit Battery Charger # 20011 has a power output of 2.5 amps according to my tech contact at the manufacturer. It basically gives a maintenance charge to the battery. It is designed for use with the 12 volt 5 amp hour battery traditionally found on single and tandem axle trailers like # HM20008 or # TK2023. The larger battery you referenced in the video is needed on larger trailers like triple axle applications but this charger will work perfectly with the...
    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 still...
    view full answer...
  • Wire Recommendation for Maintenance Charge of Trailer Battery
    The part # 20011 that you referenced is designed to charge a breakaway battery (which is very small). It sounds like you are looking for something to put a maintenance charge on a larger battery. Which if so you would instead want to run a length of 10 gauge wire like part # 10-1-1 from the 12 volt accessory circuit of your trailer wiring to the positive battery post. A thicker gauge wire will do a much better job charging a battery as opposed to the thinner wires of the # 20011.
    view full answer...
  • Are DC to DC Chargers Capable Of Being Mounted To Trailer Frame and Exposed To The Elements?
    Generally you do not want to leave a DC to DC charger exposed to the elements. While a charger like the OptiMate Smart Battery Charger # MA99JR does have a durable weatherproof case they restrict use to inside only. We do have the Breakaway Style Charger # 20011 which is very small and designed to fit inside the battery box.
    view full answer...
  • How Does Trailer Breakaway Kit Battery Charger Item # 20011 Install
    The wires of the # 20011 need to install as follows: 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 For more info on how to install this check out the install video link I attached on this page as well.
    view full answer...
  • Is a Battery Charger Included with the Break-Away Kit and Battery for Hydrastar XL
    The Cargo Towing Solutions Break-Away Kit and Battery for Hydrastar XL, # HBA-EBA, does not include a battery charger. If battery is connected to the 12-volt auxiliary circuit in the 7-way, the battery might overcharge causing damage to the battery. There is no way to regulate the power on the 12-volt auxiliary circuit to the breakaway battery. It is recommend instead to use a charger like the Trailer Breakaway Kit Battery Charger, # 20011. The kit is easy to install, black wire connects...
    view full answer...
  • Can Battery Ban, on Trailer Split Up for Breakaway and Trailer Accessories
    I think your plan would work just fine. You'll need to make sure the breakaway battery though is charged at all times in the event of a trailer disconnect. Typically charging it off of the tow vehicle is adequate for this. For a breakaway battery charger we have the part # 20011 that gets wired to the breakaway battery from the tow vehicle wiring.
    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...
  • Recommended Battery Size for Breakaway Brake System
    The battery you use for a break away system needs to be able to power the trailer brakes on full for 15 minutes. A 12 volt battery rated for 5 amp hours is normally used, unless you have 3 axles each with brakes, then you would benefit more from a 9 amp hour battery. However a battery this large would not charge up through the 12 volt circuit coming through the trailer connector. The replacement batteries we carry, # HM20008 and # TK2023 are both rated for 5 amp hours. You can add a charger...
    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...
  • How To Install Hopkins Battery Charger For BreakAway Switch 20011
    The Trailer Breakaway Kit Battery Charger # 20011 is used to charge the breakaway battery on a trailer. The black wire connects to the tow vehicle's battery to get 12V, the red wire connects to the positive terminal on the trailer's breakaway battery, and the blue wire connects to the breakaway switch. I made a simplified wiring diagram to show you how it gets wired in; I also attached a demonstration video for you.
    view full answer...
    Image 1 for
  • Vampire Draw on Trailer Breakaway Kit Battery Charger
    There is not a breakaway kit battery charger, including the Hopkins # 20011 that will eliminate vampire draw completely. I do strongly recommend taking a look at the help article I added on trailer breakaway kit installation. Going by this should help you maintain your battery charge if by some chance you have not wired yours the same way.
    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...
  • Trouble Setting Up Tandem Axle Horse Trailer Which Did Not Have a Breakaway System
    The Breakaway Switch # HM20060 also needs a Battery # HM20008 to get power from to activate the brakes. If you do not have a box to store and protect the battery you will also want that and a Charger # 20011 to connect everything together. I have linked our help article on trailer breakaway setup near the bottom of the page for you to reference to ensure you get everything wired correctly. Most importantly remember to wire for wire function and not color as not all trailer manufacturers...
    view full answer...
  • Is Diode Needed When Using the Trailer Breakaway Kit Battery Charger # 20011
    If you wanted to prevent the trailer back feeding to the vehicle battery a diode like the part # RM-690 would be what you need. If instead you install the part # 20011 you would not need to install a diode to prevent the battery from back feeding.
    view full answer...
  • How to Wire the Trailer Breakaway Kit Battery Charger Part # 20011
    To answer your question yes, the Trailer Breakaway Kit Battery Charger part # 20011 can be used to charge your breakaway battery while drawing power from the 12 volt auxiliary battery on your trailer. However, most local and state regulations require that the breakaway battery receive a charge from a battery not mounted on the trailer therefore, I recommend using the Trailer Breakaway Kit Battery Charger part # 20011 to pull power from the vehicle's battery via the 12 volt pin on the 7-way...
    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 help...
    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 # PTW2979 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...
    view full answer...
    Image 1 for
  • 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. Overcharging...
    view full answer...
  • How to Tell If Your Breakaway Switch Is Powered By Trailer Battery or Auxiliary Battery
    If you already have a breakaway switch and trying to find its power source, It is possible that someone could have wired the breakaway switch directly to the main battery on the trailer but it does not come like that from the factory. The breakaway switch should be wired to a separate battery. Most Breakaway switches come with their own battery and some come with a battery charger. The breakaway box is essentially a plastic box with a battery in it that powers the breakaway switch. When...
    view full answer...
    Image 1 for


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