Battery type Suitable for 1 to 8pcs AA/AAA Ni-MH batteries. Rugged Able to withstand drops of up to 1 metre. Reverse polarity protection The electrical circuit protects the charger & batteries from being damaged by incorrectly installed batteries. Over current protection Maintain a constant charging current during the charging cycle. Low battery leakage current If the battery charger is not connected to input power & left in the charger, the charger will discharge the batteries using a pre-determined current. Charging indicators LED display Charging Times AA Ni MH 1600m Ah = 9.6 Hours AA Ni MH 2000m Ah = 12 Hours AAA Ni MH 600m Ah = 3.6 Hours AAA Ni MH 800m Ah = 4.8 Hours Electrical Performance & Tests Input voltage 5V 1.5A DC input Charging voltage 8 channels of 1.4V DC Charging current AA/AAA: 200m A ± 50m A Trickle charge current AA/AAA: 30m A ± 10m A Voltage control 1.45 ± 0.1V LED indication Red LED on: Charging Full: the Red LED is off AC to DC adapter Input voltage 100 ~ 240V AC 50/60 Hz Output voltage 5V DC ± 5% Output current 5V DC: 1500m A