20–30kWh high-capacity vertical LFP batteries serve large villas, farms and off-grid camps. A 20kWh vertical battery pairs with 8–10kW inverter to support 8kW continuous load, running air conditioners, water pumps and high-power kitchen appliances simultaneously. Split systems allow capacity expansion up to 40–60kWh; all-in-one units have fixed power limits, suitable for households with stable power consumption. Modular vertical stacking saves floor space and supports indoor & outdoor installation. Main applications: PV peak-valley arbitrage, long-duration blackout backup, off-grid independent power supply. Combined with solar panels, the system achieves round-the-clock energy self-sufficiency.