... LED lamp is 100000 hours SOLAR PANEL is 25 years BATTERY is 4~5 years POLE is 15 years4.Who we ... feet, 16 feet, 20 feet, 23 feetBatteryGel cell deep cycle battery or standard deep cycle battery, 80Ah, 100Ah, 150Ah, 200AhBattery PositionUnder ground, at ... federal taxes and incentivesNo monthly electric billsControlled charging to prolong battery service lifeLong-life PV modules with more than 25 years ...