Product name: 18650 lithium ion rechargeable battery Product model: DP+18650 7400mWh Product material: Li-ion Battery capacity: 2000mAh Nominal voltage: 3.7V Full voltage: 4.25V Cut-off voltage: 3.0V Product weight: 44g Product size (mm): 18*65mm (width/height) Validity period: see the bottom of the battery Product features: small internal resistance, fast charging, and can provide large current for the load