Solar Panel 150 Watt Plus 20Amp Charger Controller The cells are individually tested and matched for optimum performance before being built into the protective module structure.A Tedlar ® base is used and ethylene vinyl acetate encapsulate. High transmission protects the cells from the front and a high strength polymer sheet at the rear. A reinforced aluminum frame completes the laminate structure which is fully sealed against moisture and protected from environmental and mechanical damage.Most common mistake people is mixing of battery's. car battery's are not good insolar storage and have internal resistancefor more information, contact the seller for guideline This is an unbeatable offer on Jumia Kenya and we deliver original items right at your doorstep from JAMAIRE ENTERPRISE LTD