At low temperatures, the activity of the lithium battery decreases, which can lead to rapid and high energy consumption. Therefore, the following points should be observed:
(1) In winter, it is recommended to reserve at least 30% to 50% of the battery capacity to avoid low charge. Especially in snowy weather, it is recommended to maintain at least 70% of the battery capacity to ensure the battery has sufficient reserve.
(2) If the battery has not been charged for more than one week, discharging should be paused until the battery is more than 90% charged before discharging is enabled again.
(3) Avoid high-power discharging. In winter, PV power is weaker and charging is more difficult. High-power discharging may cause the battery to operate at low power for a long time.
(4) Check regularly whether the PV modules are receiving normal power. Especially after heavy snowfall, the PV modules can easily be blocked by snow, resulting in the battery being unable to charge for a long time.