Olight battery charger improves battery testing

The author, a long-time Olight flashlight user, has found a new appreciation for the brand's latest pro-grade battery charger. This device offers advanced capabilities for checking, testing, and charging AA and AAA batteries. It also includes a feature to effectively identify and sift out defective batteries, ensuring users only work with reliable power sources. This functionality enhances the usability and longevity of battery-powered devices by maintaining a stock of only functional cells.