4 Slots Independent Charger - Freely charge 1/2/3/4 AA AAA rechargeable batterie Ni-Mh Ni-Cd at the same time. Smart Fast Battery Charger - Input : 5V 2A (Max) , Output : 500mA*4, charge aa batteries in 3 hours, aaa rechargeable batteries in 5 hours. Efficiently save your time. Micro USB & Type C Charging - For your convenience, this AA AAA battery charger has two charging ways, we also provide EBL micro usb cable. You can use it worldwide. Clever LCD Display - Easy to read LCD screen can show the charging status for rechargeable aa aaa batteries. You won’t get puzzled. Safe Charger - Advanced MCU control and -∆V function, over-heat and over-current protection, short-circuit protection, non-rechargeable and defective battery detection.