Weltool INR21-40P High Drain 21700 Li-ion 4000mAh Rechargeable Battery

Weltool INR series lithium-ion batteries are original cells without additional protection circuits. Make sure not to discharge or overcharge this battery while in use.  This INR21-40P is a high drain battery with a maximum discharge current of 45A. Specs: Model: INR21-40P Capacity: 4000mAh Internal resistance: ≤12mΩ Voltage: 3.65V Continuous discharge current : 45A（-20-60 ℃） Max. charger charging current:  6A (15℃- 45℃) Standard charging current:2A（25℃ ± 2℃） Overcharge protection voltage: 4.2±0.05V Over-discharge protection voltage: 2.5±0.1V Cycle charge and discharge times: 300 times, the battery has 60% capacity Charging temperature: +0~+45 ℃ *** WARNING *** All users must have appropriate understanding of lithium-ion batteries before purchase. Use caution when working with and using lithium-ion batteries as they are very sensitive to charging characteristics and may explode, burn, or cause a fire if misused or mishandled. Always charge in or on a fire-proof surface. Never leave batt