... with advanced technique promoted by the state,which adopts high conversion efficient monocrystal line silicon solar battery to ensure ... shell,whose surface is solidified with high temperature oxidizer, is processed by high precision digital controlequipment, which makes it ... 35W ,5V,70mA. Life time:3-5yearsSolar battery: high efficient battery module(3.7V 1200mA)Storage battery: Lithium battery (Type ...