To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.
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.
In-stock alternatives that can ship today
Maintains the battery charge on your towed vehicle while it is being flat towed.
Features:
California residents: click here
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Hi, everybody, Andy here with etrailer.com, and today we're gonna take a brief look at this Brake Buddy towed vehicle battery charge kit. This is going to maintain the battery charge on your towed vehicle while you are flat towing it. It uses up to 15 amps from your RV's battery to keep your towed vehicle's battery charged. So you're never going to have to worry about a dead battery on your vehicle after unhooking it from being towed behind your RV. Our customers seem to be overall very happy with this kit, and they say it's very easy to install. And it's just gonna give you the peace of mind knowing that your car is gonna be ready to go when you arrive at the campsite or at the RV park, and your vehicle will be ready to go after you unhook it from your RV.
Well, that's gonna conclude our brief look today. I do hope that it was helpful for you. Again, my name is Andy. Thank you for joining me..
I used one these on my first toad and never had an issue with a dead battery. So this is my second purchase. Pretty easy install. A bit tricky to find a place in the open to mount it in the CR-V. I want it easy to see and easy to check/change fuse.
This is a mixed review. The product works as expected. It was straightforward to install. It keeps the battery topped off while it is being towed down the road. The issue I had with it was that it burned up after about a year. I am not sure if that was due to product location within the engine bay or bad quality. I purchased another one due to all the wiring already being in place. So far the second one is working. Therefore I can’t call it a terrible product but it did fail. You have decide for yourself if you want to purchase this product.
did not know how to attach these pictures to the site you provided in your email so I am sending to you like this. First, my overall rating is five stars. Second, the installation was not hard at all and took me less than an hour. Third, the lack of instructions leave a lot to an individual's imagination but with so many different vehicles I understand why. However, a link to the general instructions in your video file would help a lot.
These pictures show my installation of the battery maintainer on my 2014 Fiat 500 L.
Picture 1 is of the mounted fuse unit on the driver's side fender firewall.
Picture 2 shows the ground wire (White wire attached to the front quarter panel attachment bolt.
Picture 3 shows the Black wire attached to the Positive terminal on the battery.
Picture 4 shows the charge unit and fuse mounted on the driver's side fender firewall together.
Picture 5 shows the vehicle taillight wiring lines being followed down to the six way plug on the front of the towed vehicle.
James S. 
5/26/2023
Excellent. I have had no problems I have recommended it to four friends.
Just what I needed delivered quickly.
Garet
7/7/2025
Working great. Weve towed out jeep over 10,000 miles in the last year and it never let us down.
Lazer S.
7/7/2025
Lousy. No led light to let you know if you're getting any power to charger.No lights to let you know if battery is charging. No hardware or instructions for installation.Ifyour wifi is down or no internet you can't get online to see installing info. Most often black wire is ground and red is hot on DC batteries. Not on this charger so if your not familiar with electrical hook up, well your pretty much at a stand still until you can go on line.
Michael
8/5/2024
I still fil the same. Every time I leave for a trip, I never know if the charger is charging my battery. There is no LED Ligt indicator to let me know if there is power to the charger or if battery is charging. Im looking for a row charger that has indicator lights.
As usual etrailer got what I needed to me quickly. Thanks
Works as described. Installation was not difficult
The videos to show how to install purchase are solid gold.
The battery charger was simple and didn't take time to install, but I do have a question and is where can I take power to charge the tow vehicle if you only have the basic trailer connection on the coach.
Easy install and works great!
etrailer was a great resource when setting up my 2021 Wrangler Islander for flat towing! The BrakeBuddy works great... we haven't had any problem with the battery at all. Would highly recommend it!
Great quick service and delivery.
Straight forward hookup to keep battery charged during travel.
So far it seems to be working OK, the Blue lite is on.
Installation was simple and straightforward, fortunately etrailer had a video as no instructions were included in the box. I have not road tested yet but as soon as I plugged the car to the RV a blue light on the charger illuminated showing it was receiving power. A quick check with a voltage meter showed the battery was receiving a charge.
Got product fast and will continue to order here
All parts fit perfectly and have worked well
Product works exactly as described.
Dealing with Sheila was amazing. I had a rather confusing situation to overcome and after explaining it to her, she came up with the best result possible. She is a credit to Etrailer and it’s the people like her that make me coming back to the site.
The ease of installation, I haven't got to use it yet.
So, I purchase this kit from you and you and when asking for instructions on you say there are NO Instructions from the manufacturer". So how do you all propose I proceed? So NO wiring diagram, NOTHING???
Sure NOT the kind of service I come to expect from etrailer.
Heather A.
7/2/2021
Thank you for your review. Since this part is designed to be used with the Brake Buddy supplemental braking system you can use the instructions from that part to install the charger. I have attached a helpful link for your reference.
Helpful Links
I received my shipment quickly. There are a couple items that have not arrived yet. I have an install date of mid-June. From what I can tell, I will have everything I need.
I want to thank Kimberly. She was great!
Worked great on the first trip. Easy to install. Quick shipment. Thanks
Put this in my towed Chevy HHR to allow me to keep the power on so my brake lights would illuminate when the Brake-Buddy applied the brakes. Works great and install was very easy.
Time will tell if this solves the problem of my toad battery going dead, even though I have had a 12 volt feed from the MH. My 3 stars is based on the transaction process. On the website it said I would receive the shipment on Thursday of if I paid extra for shipping. No problem. I’m leaving on an extended trip soon and my UPS doesn’t deliver unless 8 or 9 pm. The problem is that etrailer didn’t actually ship it until Wednesday so I didn’t get it until late Friday. Last night was a late night for installation after the delivery. This is the second time I paid for expedited shipping based on their promise of the delivery date only to miss it by at least a date because they didn’t get it out the door. .
That leaves the second issue. I opened the box and the product was there but no installation instructions. I had to research the correct wiring online.
I’m disappointed in etrailer this time.
Do you have a question about this Accessories and Part?
Info for this part was:
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.
Gwendolyn Y.
2/14/2025
Hey Bill! Looks like you found the perfect spot for the kit.