1. Working Charging Voltage: 220V AC 2. Normal Charging Time of the Batteries: 24 hours. 3. Least Lighting Time of the Daylight Lamp when the Electricity is Off: 3 hours. 4. The emergency lamp uses nickel-cadmium batteries of 3.6V, 3.0 Ah. 5. The emergency lamp uses the special2* 8W daylight lamp. 6. Size: 356.5mm X 136mm X 84.3mm 7. Weight: 1060g