For the safe and fast charging of NiMH batteries Suitable for 1 or 4 AA / AAA NiMH batteries Charging stop due to exact minus delta V detection Defective battery detection Safety timer cut-off Input voltage 100-240 V/50 Hz Charging status LED Max. charging current for AA 450 mA Max. charging current for AAA 200 mA Power supply 100-240 V Rechargeable AA / AAA batteries Automatic charger Safety timer cut-off: Yes Reverse polarity protection: Yes