Cars, trucks, RVs, and motorhomes run dual 12-volt batteries for various reasons. Depending on how you wire a two-battery 12-volt system, the result can be a 12-volt system or a 24-volt system—or even ...

The battery died on my riding lawn mower. I was wondering whether it is safe to jump-start the lawn mower with my car, and if so, do you have any tips on how to do it? RAY: Carefully. TOM: Every year ...

If you’re new to electric vehicles—or are starting to research options for an upcoming purchase—you may not know that in addition to the high-voltage battery pack that supplies power to the motor, ...

In this report, we’re testing Topdon’s new V4500 Plus jump-starter on a 12-volt battery that is beyond dead. The product test actually is a precursor to the formal reintroduction of “Project Black ...