... based on the power supply 4.5Ah Ni-MH rechargeable battery, and its lamp-sourse is LED (light emitter diod).Features ... :1. Power supply is 4.5Ah Ni-MH rechargeable battery. It has the characteristics of maintenance-free, high-energy, long ... protection: it’s weight is only one of six of lead-acid miner’s lamp-about 550 gram. It is portable and ...