Compatible: Can both charge AA and AAA Ni-MH Ni-CD rechargeable batteries(Do not charge alkaline or Lithium batteries) How many batteries can be charged at a time: 1/2/3/...6/7/8 AA AAA Ni-MH Ni-CD rechargeable batteries freely at a time, don't need to charge batteries in pairs. Ultra friendly for the one-battery needed device. Working Temperature: Using Environment: Temperature: 0-35℃; Humidity:35%-95% Storage Environment: Temperature: -10-50℃; Humidity: 45%-85% Super Rapid Charging Technology Specification: Input : DC 5V 2A Output : DC 1.2V AA： 1800mA AAA : 900mA Charging Time Table: （Capacity: AA 2800mAh AAA 1100mAh） AA*1/2 1800mA 1.5hours AA*3/4 900mA 3hours AA*5/6/7/8 450mA 6hours AAA*1/2 900mA 1.2hours AAA*3/4 450mA 2.4hours AAA*5/6/7/8 225mA 4hours Much Faster than other name-brand AA AAA Battery Chargers Good Heat Dissipation Efficient prevents overload, over heating, over current & voltage, and short circuit for safer, faster charging.EBL always provide you a safety environment, reliable battery charger. Easy Installation Groove design helps you install on or off very easily.Please remove the battery as picture. Never worry about batteries stucking in charger. Compact Size Size: 4.9*2.96*1.0 Inches What you get: 1× C9010N individual Battery Charger1× User Manual1× Micro USB Charging Cable