I used this EcoFlow battery to run my 3,000-sq-ft home in a blackout - here's how it kept my AC on

Many backup systems keep essentials online, but the EcoFlow Delta Pro Ulta X can run your house like normal without ...
Electronic Design

Integrated 4-Stage Buck Converter Boosts Multi-Mode USB Charging

Semi introduced a single-chip, 4-stage, charge-pump-based buck converter for multi-mode USB battery-charging applications.

How I check, test, and charge my AA and AAA batteries - and sift out defective ones

I've been a fan of Olight flashlights for many years. Now I'm a fan of its new pro-grade battery charger. Here's why.