The best power banks and portable chargers for every device in 2025

On a recent work trip, I had plenty of things to worry about — but being able to recharge my two smartphones, laptop and iPad were not among my concerns. In my carry-on luggage, I had two medium-cap [...]

The best laptop power banks for 2025

There’s nothing worse than trying to get work done offsite and realizing your laptop is nearly dead. OK, there are plenty of worse things, but running out of battery when you’re not near an outlet [...]

What’s going on with Donut Lab?

In January, a Finnish-Estonian startup proclaimed it had developed a truly solid state battery, a holy grail for the technology industry. Donut Labs’ cell wasn’t just solid state, however. It clai [...]

How to replace your AirTag battery

Apple’s AirTag is designed to run quietly in the background, helping you keep track of everyday items like keys, bags and luggage. Unlike many small trackers, an AirTag doesn’t need to be charged. [...]

A solid electrolyte gives lithium-sulfur batteries ludicrous endurance

Sulfur can store a lot more lithium but is problematically reactive in batteries. [...]

The 6 best cordless vacuums for 2025

Cordless vacuum cleaners have come a long way, and they’re no longer just a convenient alternative — they’re genuinely powerful cleaning solutions for many homes. Whether you’re tackling daily [...]

CES: So very big, so little sustainability tech

Every third booth at CES showed off some new AI product or other. If you wanted to find a robotic lawn mower, throw a rock. Humanoid robots, smart locks and super thin TVs were everywhere. But if you [...]

The best fast chargers for 2025

These days, phone charging isn’t just about plugging in and waiting — it’s about speed, efficiency and convenience. With so many devices supporting fast charging, the right accessories can make [...]

You absolutely should not buy Apple’s iPhone Air MagSafe battery pack

Apple released its thinnest phone yet last week, the iPhone Air, and revealed the new iPhone Air MagSafe Battery alongside it. The existence of a specially-made battery pack wasn’t a big surprise to [...]