We test, recommend and supply solar equipment for areas of the world that has harsh environments. We design, manufacture and sell deep cycle batteries for hot climate. Our testing is done in Baja California, Mexico. We use what we sell and have installed more than 20 2500-4000 Sqft. homes in the past two with photovoltaic systems to run up to 8 tons of Air Conditioning and the standard appliances you would expect in a home of that size. We are now looking to expand and with our products come our experience. Our prices are hard to beat also. Look forward to working with you. Thank you for visiting our visual at Alibaba then visit our website www bajapower4you . com.