The Apple Watch Ultra 4 gets more battery life than Apple promises, plus two workout modes that stretch it even further. Here ...

Battery test results can disagree. See how voltage, ohmic, temperature, and capacity measurements fit together to diagnose ...

The iPhone Duo lasts longer per charge, but the Galaxy Z Fold 8 is rated for more charging cycles – here’s what that means.

The first year after their system went in included 23 outages.

A routine oil change turned into an unexpected battery replacement after a driver visited Valvoline and received a test ...

Linus Tech Tips has tested the brand-new Asus ProArt P16 2026 and the Microsoft Surface Laptop Ultra with the Nvidia RTX ...

Blackouts are rare where I live, so I cut my power to test how long the Delta Pro Ultra X could keep my home running.

Phone 18 Pro Max lasted 7h 50m and charged just 58 seconds behind Pixel. Compare S26 Ultra battery life, wired charging times ...

Enovix secured a 100,000-unit drone battery order from a dual-use drone maker, with shipments starting in 2027, as its $216 ...

We drove nearly 400 miles to see how Toyota’s latest Prius combines head-turning styling, spirited performance, and ...

OnePlus 15 vs Galaxy S26 Ultra: the OnePlus lasts 56% longer in testing, but OnePlus has left the US and Europe. Here is what ...

You depend on your car not to leave you stranded, so don’t leave your car to die. We put three of the best car battery chargers and maintainers to the test to find the best.