The all new iJoy 20700 3000mAh batteries are the perfect batteries with industry leading battery life and amperage output combination, providing a hard hitting set of batteries to last you all day.   IMPORTANT: Use caution when working with Li-ion cells, they are very sensitive to charging characteristics and may explode or burn if mishandled. Make sure the user has enough knowledge of Li-Ion rechargeable batteries in charging, discharging and assembly before use. Always charge in or on a fire-proof surface. Never leave charging batteries unattended. We will not be held responsible for damage if there is any modification of the batteries/chargers in any form. We are not responsible for any damage caused by misuse or mishandling of Li-Ion batteries and chargers. Specifications:   Brand: iJoy Model: 20700 Size: 20700 Chemistry: NCR Nominal Capacity: 3000mAh Nominal Voltage: 3.7V Discharge: 30A Max Continuous, Rated by iJOY as 40A Max Pulse Positive: Flat Protected: NO, UNPROTECTED Rechargeable: Yes Dimensions: 20.4*70.1mm Weight: 57.8g   Package Contents:   1 x iJoy 20700 3000mAh 40A Batteries