This vertical 8KWh energy storage battery with movable rollers supports free movement and multi-unit parallel expansion for outdoor work and emergency backup. It is equipped with a 6KW off-grid high-frequency inverter for continuous power supply in off-grid areas. Adopting high-quality LiFePO4 cells, it has a 12-year design life and 8000 standard charge-discharge cycles. With IP21 protection level, it resists light rain, dust and moisture. The built-in intelligent BMS monitors voltage and current in real time to avoid overcharge and overdischarge, ensuring high safety and durability.