... material, 2.constant current charge, 3.long-life non-corrosive Ni-Cd battery Features:1) Full fire-resistant material, constant current charge2 ... -, over-charge and over-discharge protected3) Long-life non-corrosive Ni-Cd battery4) Easy to be maintained, convenient to operate, safe ... of fire7) Emergency power supply: 3 x 1.2V, 800mAh Ni-Cd battery, 3KRH15/518) Rated voltage: AC 220V, 50Hz, DC 3 ...