WSH All-in-One Series: Inverter (5-6kw), expandable battery capacity (5/10/15kwh) for home solar power station to meet users' on-grid and off-grid needs. Just connect the PV panels, you can easily form a complete PV system. Inverter built-in MPPT, single-phase high-frequency, conversion efficiency 93%, 2-year warranty, IP20 protection level. Li-ion battery module 51.2V100AH as a unit, free stacking, wireless connection between batteries, 10-year warranty. The all-in-one design solves the communication protocol between the inverter and the lithium battery; and the design is simple. Relative to the traditional separated inverter + lithium battery, greatly reducing the difficulty of installation.