Solar Panel: 1)Max Power: 2.2W (poly-crystalline silicon) 2)Lifetime: 5 years Battery : 1)Type:Lithium-ion battery 2)Size :2 pcs 3.2V/1.5Ah 3)Lifetime: 5 years (2000 charging recycle) Light Source : 1)Type: Super bright white LED 2)Power: Max power 2W Adjustable brightness from 0~100% 3)Lifetime:100,000 hours Input Output : 1)Input: Sunlight or DC9V 2)Output :DC6V Features :Portable LED light with an integrated solar panel, easy to take.