NVX BIR80 80 AMP Battery Relay Isolator and Relay for Cars, RVs, ATVs, UTVs, and Boats.

I have had this isolator for about a month now and so far it works great.I am using it to connect and disconnect a supplemental charger for a solar powered antenna station. The battery bank is typically powered by the solar panel, but in the winter, sometimes there isn't enough daylight so the batteries need a supplemental charge from my generator, which has a 12v charging output. I just let the generator run, charging the batteries until it runs out of gas. The problem with doing that, before using the isolator, is that when the generator would run out of gas, it would remain connected to the batteries and drain the batteries. With the isolator, as long as the generator is generating power, the isolator stays powered up, which energizes the relay and connects the charger to the batteries. When the generator dies, the relay opens and the generator is disconnected from the batteries. Works like a charm.This relay is installed outside (although covered) in the elements and in temperatures down to 0 degrees F and it has worked great all winter.

Does what it is supposed to do. It is a little noisy, but it was inexpensive (load snap when it energizes) . Used it as an on off device for the alternator charger on my Van solar batteries.

Works good. I was sent the wiring diagram for the 200 amp version, otherwise all good. It does make noise “clicks on”. So if you are going to use it for in cab car audio etc, it will make noise when clicks on. It works with stereo remote.

I installed this in a 2010 Nissan Frontier to use for a dedicated 12V circuit for our travel trailer. I needed a better 12V supply separate from the standard power system for charging a LiFePO4 battery. The regular wiring harness was not suited for the purpose. This not only powers a DC to DC charger for the battery, but keeps power from keeps the vehicle battery from being discharged if it is shut off while the trailer is connected. The hardest part about installing it was figuring out a point to attach the solenoid power line that was only active when the ignition was turned on. The fuse boxes in the Frontier were not a lot of help, but I did eventually find one suitable circuit.

Just what I needed, it works perfectly

Works like a champ, decently priced, great for separating battery's

Worked great.

Better instructions. And information how this unit works and for what purpose it was intended for..