The WBT21 is also a watch battery tester with a big voltage display that will precisely test Silver Oxide 1.55V, Alkaline ...

Maximize your iPhone battery efficiency with these easy-to-follow tips and iOS tools designed to save power and extend ...

A multimeter might look intimidating, but learning to use this simple electrician's tool will come in handy during a number of every day tasks.

One customer at an auto shop had a power drain issue that caused her to replace her car battery three times in one year.

I looked at three years of exclusive CNET data of iPhone performance to find out which models hold their charges best.

Discover how the Oppo Find X9 Pro’s 7,500mAh battery redefines smartphone endurance, outperforming the iPhone 17 Pro Max and ...

Battery cell voltage is the most fundamental measurement made on the cell. While on the surface measuring voltage seems easy, ...

CNET senior technology reporter Abrar Al-Heeti highlights that the iPhone Air she reviewed regularly ends the day with about 20% to spare (after starting with a full battery). She said it would drop ...

The Remarkable Paper Pro Move brings a real paper feel to the e-ink display—ideal for writing, reading and sketching for ...

A solid battery score. We've completed our battery life and charging tests on the Xiaomi 17 Pro Max and the result are pretty ...

Renault’s electric vehicle (EV) unit Ampere has signed a joint development agreement (JDA) with Stratus Materials.

there are light bulbs that have batteries and every time you turn on a lamp that contains one of these bulbs, you charge the ...