Off grid solar inverter is stand alone solar inverter converting battery DC power to AC power and power loads directly; They are developed from car inverter and UPS: high frequency type off Grid inverter is from car battery inverter, while power frequency or low frequency off-Grid inverters are from UPS; And now off Grid inverters built-in MPPT solar charge controllers and Grid charger are getting popular. Safe, Robust, affordable are basic requirements we request on our off-Grid solar inverters! We only choose top brands for core components like MoSFET, IGBT, capacitor, transformer etc.