Compact USB-C AA/AAA Battery Charger – 4-Bay Smart Fast-Charge Dock for Ni-MH & Ni-CD Cells Power up your rechargeable batteries the modern way. This pocket-size charger features a single USB-C port for faster, more reliable power delivery (cable not included). Four independent bays let you mix and match AA or AAA Ni-MH/Ni-CD cells in any order, while a built-in LED gives real-time feedback—green for charging, red for errors such as over-discharged batteries below 0.3 V. Advanced MCU control automatically detects battery type and applies an optimal high-current charge, then switches to trickle mode when full. Over-charge, over-heat, short-circuit and surge protections keep every cell—and your home—safe. Built exclusively for Ni-MH and Ni-CD chemistry; not compatible with lithium or alkaline batteries. Simply plug into any USB-C power source, drop in your batteries and walk away. Ideal for remotes, toys, cameras, flashlights and everyday household devices.