Ansmann DIGI SPEED 4 ULTRA / 2850 SUPER-SPEED-CHARGER Charging current: 4400 mA or 2200 mA for AA, 1100 mA or 550 mA for AAA Faulty Cell detection and trickle Charge Fan-cooled and additional temperature control function External power supply, world wide use 100-240V Includes 4 AA 2850 mAh rechargeable batteries