The control unit has a built-in 12Ah battery with an automatic solar charge controller to manage the charging process and prevent overcharging. The 25W solar panel is capable of charging the battery to full with only 4-5 hours of
Number of Batteries Required = Total Energy Needed ÷ Effective Capacity per Battery = 30 kWh ÷ 9 kWh = 3.33. This implies that a UK household would require at least 4 lithium-ion solar batteries to sustain their
