The 100Ah/5KWh stackable LiFePO4 battery is a modular household energy storage device featured with flexible parallel capacity expansion. A single module provides 100Ah capacity and 5.12KWh power, and multiple units can be stacked and paralleled to expand capacity on demand, adapting to daily power use, high-power appliances and off-grid power supply. The modular design enables simple installation and space-saving placement. Adopting high-stability LiFePO4 cells, it avoids thermal runaway risks, with long cycle life and low energy loss, and the system energy efficiency exceeds 95%. Equipped with intelligent parallel balancing technology, multiple units work stably, making it ideal for step-by-step upgrading of home energy storage.