2007-2021 Toyota Tundra Gen 3 Dual Battery System

Seems to work good, but have not had a chance to put it through its paces. With my 1794 Tundra and Optima batteries the height of the system causes the existing power cable to be too short to connect. I stretched and undid clamps to no avail. Since the Optimas are shorter, the required spacer under the batteries needs to be removed so the cable will reach, but then a rubber block or something needs to go on top of the battery so it will be held down securely. Otherwise an awesome system.

Great instructions but my aftermarket head lights made it difficult to install the kit. I had to eventually cut the rear portion of the headlight assembly and re-seal it to get the batteries in. Once that was solved the install was fairly smooth and the technology had been working great since.

I was on the fence about the price, but the build quality and rapid support (even around a holiday) was top notch.