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 ...

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 ...

It seems ridiculous, but even electric vehicles, plug-in hybrids, and hybrids that carry big powerful high-voltage batteries also require a 12-volt battery. And certain usage patterns can end up ...

Here are facts about the Chevrolet Volt concept car that debuted at the Detroit auto show in January. (A fuel cell version appeared at the Shanghai auto show in April.) The Chevrolet Volt plug-in ...

Internal changes include electrical system and engine mechanical advancements. By far the largest change — the 24-volt electrical system — provides a greater advantage in VNLs with sleepers, in which ...

As fuel-economy rules get stricter, lithium-ion batteries may no longer be limited to electric cars. An increasing number of new cars are now being fitted with engine start-stop systems to reduce fuel ...