Developed for complex outdoor working conditions, the 15KW LiFePO4 energy storage battery features top-level protection with IP65 waterproof grade, effectively resisting the invasion of dust, rain and fog, and adapting to outdoor environments with large temperature differences, humidity and dust. Adopting reinforced mobile and stackable outdoor styles, the fuselage is wear-resistant, vibration-proof and aging-resistant. With finely tuned cells, it has excellent cycle life of over 6000 cycles under conventional working conditions and ultra-stable charge and discharge performance. It maintains a service life of more than 10 years with slow capacity attenuation and low maintenance, perfectly suitable for outdoor photovoltaic energy storage, off-grid power supply and emergency backup scenarios.