MAXDAY Li-ion Rechargeable battery 18650 3.7V 4000mah

Type : Li-ion 18650​ Voltage : 3.7 V​ Capacity : 4000 mAh​ Material : Lithium Ion (Li-ion)​ Cycle Life : Up to 1,000 charge/discharge cycles​ Storage : Avoid storing the battery in a discharged state to prevent capacity loss.​