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.

Massive recall issued for chargers after explosion reports, $224K in damages

Thousands of chargers sold nationwide are being recalled following explosion reports and 12 incidents of property damage totaling $224,000.
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.

These EV Fast Chargers Are Completely Off-Grid—And Free

Thanks to a huge solar array and a 3.4 MWh battery, this California EV charging station doesn’t need a grid connection.