To check your iPad's battery health, you'll need to install a third-party app, which will require you to connect the iPad to a computer.

Changing a car battery can be done in just a few steps. Always test the car battery before replacing and be sure to properly dispose of the dead battery.

Explore the iPhone 17 Pro Max’s extended battery life and energy-efficient design for a seamless daily experience.

Is it OK to check your phone’s power bank Can you charge your tablet in the overhead bin? What about a cordless hair dryer?

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.