The SoShine 4-channel quick charger is perfect to charge 1~4 PCS AA / AAA batteries. The charger is with voltage monitoring function safety timer and temperature monitoring function. LED indicates is designed for independent charging channels. What’s more the charger is with bad battery Alkaline and primary battery detection. - Super fast battery charger - Suitable for 4 pieces of AA/AAA size Ni-MH or Ni-Cd rechargeable batteries - Input voltage: AC 100V-240V - Powerful and stable output - Maximizes your electronic appliances' performance - Provides continuous power supply - Comes with one power cord