... .Comparing with NI-CD (Nickel Cadmium) battery,longer life time (recharging cycle :800 times),no memory effect, no toxic ... the environmentno memory no memory Light Sources16pcs Super Bright LEDLife Time: 100,000 HrsOptional Accessories 110/220V transformer (excluded, ... -crystalline silicon, tempered glass encapsulation Aluminum ally frame.Life Time: 25 yearsBattery Sealed Lead-acid Battery (6V, 2. ...