With Zero Breeze Smart Battery, you'll get up to 5 hours of battery life for outdoor use. The Power Bank contains 64 cells of 18650s, the same cells that Tesla uses. 3.5 Hour usage on High, Recharge Time: 5hrs.Model: ZB oneBattery Type: Lithium-ion Polymer BatteryBattery Capacity: 12V 43Ah 477WhAC Charge Input: AC100-220V 50/60HzNet Weight: 7.63lbsSize: 17.95*6.54*2.44 inchOperation Temperature: 0( 32 )60( 140 )Delivery note: Express (air transport, estimated 8-10 days)