Innovative split modular design of solid-state element, modules provides users with flexible installation options, including floor and wall mounting. The system consists of a high-voltage unit and 3 to 9 battery modules connected in series, covering a power range of 6.9 to 20.7 kWh. Battery modules are made from solid-state cells using a stacking method, which ensures high energy density and safety, as well as a service life of up to 15 years. Each module has a minimum thickness of 15 cm and a weight of less than 28 kg, making it flexible for expansion, has a high level of protection and can be operated by one person. The system has a built-in intelligent battery management system (BMS), which can automatically identify battery modules and support remote diagnostics and software updates. The battery system is compatible with common single-phase/three-phase inverters on the market, which can meet the daily power demand of residential buildings, public facilities, small factories, etc. It is also suitable for high power and long service life application scenarios. It can also be used as an emergency or backup power source. The LPD Series system can also maximize energy, economic and environmental benefits through peak control. The reliability of the power supply process is significantly increased and sustainable energy ecology is supported.