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 ... scope: can be used to prevent theft, back, front your gate, narrow lane, corner, garage, corridor, building lighting, can ...