Solar Panel:2.8Wp 15~20years Storage battery: ... fire and anti-aging metirial for the shellSpecifications:01, Solar Panel:2.8Wp 15~20years 02, Storage battery:4000mAh ... lampsWorking principle: during the day, it absorb and storage solar in the recharge battery, at light when the body ... theft, back, front your gate, narrow lane, corner, garage, corridor, building lighting, can provide the storeroom of 50- ...