VEVOR 48V 600Ah LiFePO4 Lithium Battery, 6 Pack 100Ah, 30.72kWh Capacity, 51.2V Server Rack LiFePO4 Battery with Bluetooth, Max 6000 Cycles, LCD Display, for Off-Grid, Solar System, Backup Power

Best operating environment (installation): 20–40°C (68–104°F). The battery "works best" within this ambient temperature range. If this answer does not resolve the current issue, please contact us again for assistance.