Why Choose Ostation X? 3-in-1 Automatic Rechargeable Battery Charger: Say goodbye to traditional chargers. Ostation X charges, tests, and organizes your batteries. Having undergone over 10,000 charging tests and backed by 16 patents, it¡¯s CE, FCC, and UL certified for reliable, worry-free use. Simplest Ever¡ªDrop, Charge, Go: Simply drop in your batteries¡ªno need to check (+)/(-) polarity or worry about brand compatibility. No fuss, no guesswork¡ªjust more time to enjoy life. Smart Battery Detection: Automatically identifies invalid batteries and separates them from healthy ones, preventing risk from using bad batteries. Smart App Control at Your Fingertips: Keep track of your charging progress, battery health and even get alerts for faulty batteries¡ªall from your smartphone. Ostation X AA: Up to 32 Batteries at Once. Ostation X AAA: Up to 36 Batteries at Once. Never run out of batteries again. You'll always have enough power, whether it's for your gaming controller dying mid-battle or your smart home devices needing a boost. * Make sustainability start at your place-care for batteries, care for the Earth.