A battery test shows iPhone 17 gains are real but modest, with eSIM-only models likely lasting longer thanks to larger ...

If you ride every day, battery size is not about marketing range – it is about having enough capacity to finish your route reliably, even when it is cold, windy, hilly, or you are running late and ...

The global capacity of utility-scale batteries increased more than 12-fold between 2020 and 2024 to 124 GW, while average battery costs fell 58% over the period, according to the Electricity 2026 ...

Electric car batteries are surprisingly robust, and mileage is not a good indicator of battery wear, according to a new study.

The performance of rechargeable batteries is governed by processes deep within their components. A fundamental understanding of electrochemistry, structure–property–performance relationships and the ...

A surprising breakthrough could help sodium-ion batteries rival lithium—and even turn seawater into drinking water. Scientists discovered that keeping water inside a key battery material, instead of ...

The open Battery Data Format standard for battery testing data enables researchers, designers, and manufacturers, as well as ...

Key fob batteries always seem to die at the worst times. Learn a simple way to test a coin cell, plus which results you'll ...

We ran battery tests on 17 phones - this model lasted the longest ...