Shenzhen PowerOak Newener Co., Ltd is a subsidiary of Kayo Maxtar Battery Ltd, who was into lithium ion battery field by deep cooperation with Japanese team since 1999. The technical experience accumulation of manufacturing li-ion battery and BMS (Battery Management System) lays a solid foundation for PowerOak all-in-one solar energy storage system (ESS). The system is integrated with solar charge controller, AC-DC charger, lithium ion battery with advanced BMS, pure sine wave inverter with UPS function and other control circuits. Importantly, the inside parts are highly compatible with each other. Store the energy generated from solar panels, or when utility rates are low, and power your home in the evening. The product lowers your electricity bill and you can sell the exceeded solar energy to grid for profit. Meanwhile, the system offers independence from the utility grid and the security of an emergency backup. Using the APP for smartphone, monitor your solar production anywhere, anytime. PowerOak makes you enjoy solar green energy and uninterrupted power supply and never worry about power outage.