Please do the following checks to help us analyze the cause of the failure:1. In the settings, set the battery type to lead-acid battery, and then restart the inverter (disconnect all the input and output switches of the inverter, and turn on these switches after the screen goes out).2. In the settings, select the working mode of the inverter to cut the peak and fill the valley, and set it to the discharge mode. After the inverter works for 2 minutes, restore the previous settings to the previous parameters, and restart the inverter again. , Check the battery temperature and battery SOC display on the screen?