DO NOT store the power station for an extended period after fully discharging. Otherwise, the battery may over-discharge and cause irreparable damage to the battery cell. For long-term storage, please recharge the product to 100% and then discharge it to approximately 60%. Storing with high battery level for a long duration can cause the battery to age more quickly, while storing with low battery levels can cause over-discharge. Then, recharge and discharge it once roughly every four months: First, discharge the power station to 15%, power off, and wait for two hours or longer. Then, recharge it to 100% using the 270W Standard Recharge Mode in order to maintain the power station.