... Solar Controller, Battery, Solar Inverter together in one box Solar Inverter System SOROTEC Solar Inverter System supply (SPS)SPS ... into AC power 220V or 110V , the Inverter is necessary.)The function of every part:1 ... battery, Ni-Cd battery or Lithium battery.4.Inverter: The direct output solar power is 12VDC, 24VDC ... for the electric appliances,so one DC-AC Inverter is necessary.it needs to convert the ...