Honestly, this is the best dual battery isolator kit out there. Period.

I've already convinced three friends to buy this after they saw how well it works in my van. If you drive a lot, this is a great alternative to solar or just a good backup for safety. Highly recommended for anyone needing extra power on the road.

It does an excellent job keeping the second battery topped up. Just a heads-up: the power only flows one way. If your main starter battery dies, you can't use this to self-jump using the aux battery; you'll still need a jump start. Other than that limitation, it works perfectly.

I used to have a Redarc unit that failed right when I was stranded in the middle of nowhere. This unit does the exact same job but costs a third of the price. You could literally buy a spare one and still save money. Easy to install and has been reliable so far.

The isolator performs perfectly! Installation is pretty straightforward once you decide where to mount it. In my case, I just had to build a small shelf to sit it on, but after that, it was smooth sailing.

I needed a reliable relay for my Chevy truck to handle an auxiliary battery, as my 30-year-old OEM part finally gave up. I run a pickup camper setup with one battery under the hood and another in the camper, and this unit isolates them perfectly.

Hands down the best equipment I've bought recently. Not only is the isolator perfect, but the after-sales service is also stellar. Don't waste time on cheap alternatives; this one is worth sticking with.

There's not much to it—just stick to the installation manual provided and you won't have any issues. It gets the job done.

Installation was incredibly easy. As long as you already have your spare battery and tray mounted, this kit provides the rest. The whole wiring project took me less than an hour from start to finish.

excellent quality parts without breaking the bank. The kit includes everything you actually need to hook up a secondary battery, and the instructions were surprisingly clear.