Cold snaps are brutal on car batteries, and weak 12-volt units are the number-one cause of winter breakdowns in the UK.¹ A ...

Trekure 10-In-1 Car Battery Jump Starter and Air Compressor: This device delivered the strongest peak amperage of the test ...

You can check the health of your iPhone's battery to determine when it's time for a replacement.

Confused by kilowatts? Can’t tell an anode from a cathode? Here is a simple guide to the jargon likely to be tossed around at Tesla’s Battery Day on Sept. 22.