... steel Controller 12V 10A solar charge controller Battery 12V 120Ah, gel cell deep cycle battery Working Time 8 ~ 10 hours/day, ... 20 feet, 23 feet Battery Gel cell deep cycle battery or standard deep cycle battery, 50Ah, 80Ah, 100Ah, 150Ah Battery Position Under ground, at the ... and incentivesNo monthly electric billsControlled charging to prolong battery service lifeLong-life PV modules with more than ...