An electrical relay is a type of remote-control switch able to handle high-current accessories. Marlan Davis explains a 12-volt relay and how it works.

In that case, the 12-volt battery will continue to power the car's systems. Rivian faced a massive problem in March after the 2023.6.2 update broke the connection between the high-voltage and 12 ...

Depending How They’re Wired, two 12-Volt Batteries Yield a 12-Volt System with Double the Amps, a More Efficient 24-Volt System Twice the Cranking Speed.