Samsung INR 25R 18650 2500mAh Battery (SINGLE) This is the updated version of the original blue Samsung 25R. With a 25 amp max continuous discharge this battery can handle sub-ohm builds down to .15 ohms. This battery is a great mix of capacity and discharge rating! Brand: Samsung SDIModel: 25RSize: 18650Nominal Capacity: 2500mAhNominal Voltage: 3.6VMaximum Voltage: 4.2VDischarge Current: 20A Maximum ContinuousStyle: Flat TopProtected: NO, UNPROTECTEDApproximate Dimensions: 18.33m x 64.85mmApproximate Weight: 45g