PK-81464- SLOT 5V INPUT Ni-MH Battery Charger Input: 5V/2AOutput: 1.53V 0.4A*4Compatible with: Ni-MH / Ni-CD : AA , AAACharging Indicators : Red : charging ; Green : power on or fully charged Short Circuit protectionReverse Polarity protectionCharging mode: constant current pulseDimensions: 86mm*71mm*36mmWeight: 66.6g