... Product Description emergency light,led emergency light,rechargeable emergency lightDirection for use: 1. When you use one 4-pin fluorescent tubes(11watt)as an illumination light, it ... overdischarging.4. It has a built-in lead-acid battery, rechargeable, free of maintenance, with the capacity of 4AH, 6V ... -60Hz.6. The lamp has a built-in automatic emergency circuit. When it is charged, the LEDs and the ...