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Lead-acid batteries require no maintenance, which is why we love this kit. The built-in charger keeps the battery charged and ready to bring your single-, tandem-, or triple-axle trailer to a complete stop. LED tester lets you check the charge.
Features:
Specs:
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.
The integrated charger keeps the included battery charged and ready to go. At any time, if you would like to see what the state of the rechargeable battery is, just push the green button and LEDs will light up to indicate the battery's status. If it's green, it means the battery is fully charged. Yellow shows it's currently charging, and red indicates a low battery.
Quick Tips:
Customer Satisfaction Score:
99% were satisfied with this product
1% of customers were not satisfied
Ratings & Reviews
Great product to use when swapping out the old surge brake system for a new electric system. Only needed to buy wire and waterproof connectors and I was set.
Product seems to work however the instructions that came with it had the correct part number but the wiring diagram was wrong. I contacted etrailer and they confirmed that and emailed me a more current diagram which was also wrong. I contacted curt and the first tech told me there was a wiring issue with my trailer. Finding none I called again and was told the first tech was wrong. Then I noticed the diagram on the control cover and it is correct and seems to be working. Called curt again and they said they are looking into the instructions issues.
Excellent, high quality kit. The instructions are poor. White goes to ground, blue goes to the black emergency disconnect wire, with the other blue emergency disconnect wire going to the blue (e-brakes) junction. Red goes to the 12v junction (black).
Replaced a outside rail unit on my Trailex enclosed (1999) with this unit, but moved it inside by winch mount to better protect from elements. 1 year in, start of new towing season, still working as designed (brake engage), charging off of tow vehicle 12v power from 7-pin cable source.
Would buy again to replace a dead battery, to all new accessories, not a place to scrimp.
The state of charge indicator light for the battery is reassuring when you connect to the trailer. Trailers do need to stop if they ever become disconnected from the tow vehicle, and this lets you know you have the power to do just that.
Product is great quality and all but the only issue i have is the wiring diagram for a diyer is horrid. Still havent figured out how to wire it. 2 blue wirs and a black and nothing about where they go. After 2 sparking incidents and killing the battery i gave up trying to install
Lauren was very helpful, fast delivery
Have not recieved yet
worked as intended
Product as described. Wiring instructions from MFG not exactly correct- as referes to 2 black wires from break away switch. There is a blue wire and a black - blue wire color matches with internal wiring from box.
Works as it should …
A real great quality product. Unfortunately weather/time has not allowed me to get it installed. Thank you for the availability of this product.
The product is fine the paper that comes with it does not match. One extra piece in the picture. Wiring diagram dose not match the product. Should be the following.The white wire is ground (-). The blue wire is positive (+) for the brakes/breakaway switch. The red wire is for the charging circuit (12v Aux Power) in your connector.There is no yellow wire in the push to test panel.I would give it a 5 star if the paper work was ok.
Great price.
This is a product that I hope I never have to use! It arrived sooner than I expected. Packaging was great, no damage. I did have an issue with the instructions that came in the box. It showed two black wires coming from the battery/charger box, instead of a red, white, and blue. Went on line a was able to print out the correct wiring diagram. The other thing that the instructions said was to use a 9/32 drill bit for the mounting screws. I drilled the first hole and the screw went right through the hole. Should use a 7/32 drill bit. All in all, very happy with the product. Have bought from etrailer four or five times, have been happy every time. Will buy again when I need something else

Bruce
3/21/2025
Still fortunate enough not to have had to use it! Trailer doesn’t get used that often, and sometimes the battery goes dead between usage, but charges back up when used.

Replace old one with this worked out good
I replaced an existing backup battery and break-away switch and this product installed easily and works well. The info on the product page really helped me find what I needed.
Quality built, easy installation instru ctions
Very fast shipping. Product was easy to install
The included instructions were helpful, and it had all the mounting hardware needed. Thanks for a great product. I installed this along with new brakes as well. The whole package went on it's first trip in who knows how long.
Well, I'm knocking off two stars because of all the time spent researching the CORRECT wiring diagrams! The one that comes with it is NOT the correct instructions or diagram for this battery. The Battery and test feature and breakaway switch are all well built, but not even eTrailer is getting the problem addressed adequately about the wiring diagram. Fortunately, someone mentioned finding the correct manual and diagram (even it has flaws) on line. Between three different manuals and diagrams I think I'm figuring it out, but it has taken me several hours to do this.
Once installed everything worked perfectly. Be sure and follow the instructions that are provided.
the battery box mounting holes matched the holes already in the trailer (tandem axle gooseneck utility), so that saved some effort. the hole spacing on the short side is 3 1/4", not 3 1/2" indicated in the image on the website. perfect replacement for the original breakaway system when the trailer was purchased new 8 years ago.
During the upgrade of my dual-axle, 4500-lb trailer to disc brakes and "electric over hydraulic" acutator, I needed to install a breakaway kit on the trailer tongue. The Curt Trailer Breakaway kit fit the dimensions and the 5Ah battery provides enough power to actuate the EOH system.
Do you have a question about this Trailer Breakaway Kit?
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Heather A.
8/14/2024
Hey man I totally get it. Wiring diagrams are not my thing either. I recommend to look the installation video I posted because David explains it step by step.
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