... inverter, controler, battery, solar panel ,mounting 3. fast delivery 3kw stand alone solar system from Qingdao allrun new energy co,, ltd Solar ... energy controller: The function of solar energy controller is to control whole system working status and prevent overcharge and overdischarge. In ... voltage. ) COMPONEENTS REFERENCE1. SOLAR PANEL2.INVERTER3. BATTERY Full set 3kw stand alone solar system