LH51100-W series wall-mounted energy storage lithium battery is a high-tech product with multiple application scenarios developed by Guangdong Lihua New Energy Technology Co., Ltd. It integrates lithium battery packs, off-grid inverters, and battery management systems, which can be connected to photovoltaics, grids, and loads. And select the charging method according to the application scenario. The system has a variety of working modes to choose from to meet various application scenarios. It is suitable for scenarios such as household use of emergency power backup (power shortage, power outage, typhoon, earthquake and other natural disasters), peak-valley electricity price arbitrage, self-use and other scenarios, and has outstanding advantages in the application field of household energy storage.