Power Base Max1712D is a new high voltage lithium-iron-phosphate battery storage system under the self-research and development procedure of ZRGP, consisting of high efficient photovoltaic controller (20kW), long-life cycle lithium iron phosphate battery pack (17kWh), and EMU (12kWmax). It can be applied to match with any arbitrary PCS. The battery pack can be able to be expanded anytime and anywhere so that the availability of either old or new batteries can be improved. And it can match the photovoltaic inverter to achieve power generation energy storage.