... steelController24V 10A solar charge controllerBattery12V 80Ah, two gel cell deep cycle batteriesWorking Time8 hours/day, 3 ~ 4 cloudy ... , 16 feet, 20 feet, 23 feetBatteryGel cell deep cycle battery or standard deep cycle battery, 80Ah, 100Ah, 150Ah, 200AhBattery PositionUnder ground, ... incentivesNo monthly electric billsControlled charging to prolong battery service lifeLong-life PV modules with more ...