Hello, this is Evis from a battery pack factory, Please keep the battery in the cool and dry environment: Within 1 month -5°C~35°C or Within 6 months 0°C~35°C, with relative humidity s75%, please charge the battery pack (around 50% SOC)regularly (every 60-90 days) to keep its chemistry active and longer lifespan. Long shelf time without charging the battery, the battery may completely depleted or totally died.

https://litechpower.com/lifepo4-battery-for-forklifts/