Many smartphones have fast wired and Qi charging, but both are reduced by various optimizations to maintain your battery.

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Car batteries are like avocados: they always seem to go bad at the worst possible times. So, what do you ...

If your car won’t start, here’s how to get on the road again without relying on a passing traveler with a set of jumper ...

Whether you're dealing with a dead battery on a cold morning or just trying to maintain your car during long periods of no driving, knowing how to properly charge a car battery is important. A ...

So you’ve entered your garage, leather jacket and helmet on, only to find your motorcycle battery is dead. What now? Dead batteries don’t always need replacing, as they can be recharged, as well, so ...

Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? A digital multimeter is an indispensable tool for testing, diagnosing, and ...