High Frequency Off Grid Solar Inverter PV1800 VHM Series (2-5.5KW) PV1800 VHM is a multi-functional inverter/charger, combining functions of inverter, solar charger and battery charger to offer uninterruptible power support in portable size. Its comprehensive LCD display offers user-configurable and easy-accessible button operation such as battery charging current, AC/solar charger priority, and acceptable input voltage based on different applications. Features: Pure sine wave solar inverter Output power factor 1 High PV input voltage range Built-in 80A MPPT solar charger Parallel operation with up to 3units (available for 3KW,4KW,5KW,5.5KW 48VDC) Battery equalization function to optimize battery performance and extend lifecycle Built-in anti-dusk kit for harsh environment