KOMAES 400 Watt 24 Volt Polycrystalline Solar Starter Kit with 40A MPPT Charge Controller, 4pcs 100W Waterproof Solar Panels Ideal output: 2000Wh per day, can fully charge a 50Ah battery from 50% in less than 1 hour (depends on sunlight availability); Perform great in low light environment. Corrosionresistant aluminum frame for extended outdoor use. Withstand heavy snow (up to 5400 Pa) and strong wind (up to 2400 Pa). The kit includes 4pcs 100w Polycrystalline Solar Panels, 40A MPPT Charge Controller, one pair of 20ft 13AWG Tray Cable, one pair of 20Ft 13AWG Adaptor Kit MC4 Solar Cable and 4 set of Z brackets. Corrosion-resistant Anodized aluminum frame; Waterproof IP-65 Rated Junction Box; High efficiency solar cells and advanced cell encapsulation make long service life up tp 25 years. Perfect design for residential roofs, business roofs, cabins, RVs, boats and remote power use.