https://zruipower.com/products-item/power-base-max-a/ The Power Base Max-A is the Off-grid and Grid-Tied type of energy storage system which an integrated battery system, inverter system, and control system. Its application is very convenient, in which input can directly connect to the power grid, oil machine, or photovoltaic panels, and output can be directly connected to the load. This system can provide a quick solution for photovoltaic energy storage or uninterrupted power supply.