Product details of Xiaomi AA/AAA Rechargeable Battery Charger - White(WASRBCMOV)

• Designed for AA / AAA Ni-MH Batteries Charges 4pcs Ni-MH batteries simultaneously, each of the 4 slots work independently Doubles as Back-up Power Bank Put in 4pcs fully-charged AA Mi-MH batteries, then ZI5 can double as power bank and charge small devices by USB output port Quick Charge Charges Ni-MH batteries in just 2h (2pcs) or 4h (4pcs), waiting is not a necessity Intelligent Current RegulationZI5 automatically detects battery type and status, preventing from charging premium cells and over charging7 Protections Over charging / over discharge / over voltage / over current protection / short circuit protection / over-heating protection / reverse polarity protection and electromagnetic prevention