More Stereo and Lights with TRUE Universal Dual Battery Kit

Wham Bam thank you man! Just returned from a 6 day long trip on my Yamaha Rhino and we were the only one of the three units that did not have starting problems due to battery discharge situations.  All three had dual batteries but I was the only one with the TRUE Universal Dual Battery […]


Thanks for the great product and the quick shipping! The TRUE UTV Dual Battery Kit was easy to understand and took all of about 15 minutes to install in my Polaris RZR. I replaced a QUAD BOSS battery isolator unit I had purchase earlier this year. With that kit I had water intrusion and the […]

Verifying the function of the TRUE isolator

How to test the dual battery system? The TRUE isolator is a sophisticated programmed voltage sensitive relay. Although the programming is sophisticated and complex the operation is basically simple. It functions by sensing the voltage available in your electrical circuit and connects (closes) or disconnects (opens) according to programmed threshold and timing factors. It is […]

Guides in Using TRUE Smart Battery Isolator?

A 12V automatic  battery isolator provides you with an additional power system and allowing you to keep the primary battery fully charge for starting the engine of your vehicle. This would save power of the starting battery especially when the charging source becomes insufficient. This is a hybrid type of technology being applied, utilizing state-of-the-art device and […]

Latest Testimonials

  Dear Dennis,  I wanted to send you a note to say happy holidays and thanks for selling me on the idea of using your new battery isolators. My little shop is now installing about 10 of these a month on both new and older model boats. I can honestly tell you I disliked using […]

Customer Testimonials

Dr. Hogan, I received the BSR’s and dual battery kit last weekend. I must admit I was skeptical of the ease of installation and the price was a little higher than the battery isolators at Wallmart but after talking with you I decided to give this a try. I have installed diode type isolators before […]