Customer Ratings & Reviews

great part,great service

I use it as a relay. Works great running 4 vaira 480's compressors.

do not buy

Product lasted 3 months before it broke maybe I just had a bad one but overall its a OK product honestly I don't think you need one but I may be wrong

this is a great product

I have a 2012 Silverado crew cab with twin batteries you have to have this for safe operation.

Solid Product

I ordered this product thinking it would be difficult to install its not just a couple power wires then ground it and run a remote wire....works great no battery issues and my car starts everyday. would recommend to anybody

Great product

Great product which does the job and price is right.

Good Product

I've had this product for over a Month now. Does what is suppose to do. I use it as an isolator to charge my secondary battery. Haven't had any problems so far.

Does what it says.

Simple isolator, does what it is supposed to do. Down side is if you have never hooked up an isolator do research because it dose not come with directions.

Good product

Does what it is supposed to as far as I know. Would expect a little less head light dimming but it isn't that bad.

Great product! Just what I needed!

Performs as advertised and cheaper and easier setup than the diode type. Didn't have to run direct to alternator and just ran a quick little wire from the fuse panel for the run switch. Easy setup, great product!

Quality part at a great price

I have had this isolator installed on my RZR for several months now. It has been submerged in water and mud and still works great. I used it to add an additional battery to power all my add on lights and stereo. Very good product. I have reccommended it to several people looking to add a back up battery. Easy to install with simple clear instructions which was a huge help as I had no idea how to do it. A+ part and service.

Does its Job!!

Does it's job perfectly. Live all the way in New Zealand, been searching round for these relays for a long time. I think i might be the only one in NZ with this product! Hahah fast shipping gottah love Sonic Electronix. Thanks Guys!

Exactly what I needed

Great value, easy installation, and I don't have to worry about killing my batteries...

By Gerald on January 28, 2016 Verified purchase

Great value!

Basic battery isolator. And it works! Installed a trunk mounted battery for the sound system only. Well, plus some fans and lights. Never had a dead starter battery and the system could play for hours.

By Jeff on April 4, 2023 Verified purchase

Separate battery

I use the 200 amp relay to run a second battery to power my amplifiers in my car audio system. The relay separates the two batteries but allow my alternator to charge both at the same time. It does a great job.