Setting the Pure Off-grid ESS Mode
The inverter works in off-grid mode. When the sunlight is sufficient, the ESS supplies power to loads and stores surplus PV energy in batteries. When the sunlight is insufficient or there is no sunlight, the batteries discharge to supply power to loads. By default, the charge cutoff capacity of Huawei LUNA2000 batteries is 100% and the discharge cutoff capacity is 0%. For details about how to change the charge or discharge cutoff capacity, see Battery Commissioning. In off-grid mode, you need to set the off-grid power grid code on the Quick setting screen.
If the mains is unavailable, you need to set the off-grid power grid code. In off-grid mode, the battery must be configured.
The battery does not discharge when it is discharged to the SOC. When sunlight is available on the next day, the battery starts to supply power to loads after being charged to a certain amount of electricity.