Aluminum shell easy to conduction heat Adjustable brightness from 0~100% Solar Panel: 2.2W (poly-crystalline silicon); Lifetime: 5 years Battery: 2 pcs 6.4V/1.5Ah Lithium-ion battery; Lifetime: 5 years(2000 charging recycle) Light Source: Super bright white LED 2W (Adjustable brightness from 0~100%) Lifetime:100,000 hours Input Output: Input: Sunlight or DC9V; Output: DC6V Packaging: Box Size: 15.5cmx14.5cmx26.5cm; Carton Size: 45cmx32cmx 55cm; Carton volume: 0.09CBM, Carton Gross Weight: 18KG, 12pcs/ carton For container: 20"FCL:3780pcs 40"FCL: 7644pcs