Samsung INR18650-25R claims the R5 versions have the same performance but slightly better cycle life than the previous blue smurfs. These batteries are an upgraded versions therefore they can withstand higher wattages and lower ohms. They are extremely similar to the VTC5 by Sony but will get the job done with any regulated mod.
Sony and Samsung batteries are made and also tested in the same factories therefore when buy either a Sony or a Samsung you are buying a very similar cell.
Nominal Capcity: 2500 mAh
Nominal Voltage: 3.6V
Discharge End Voltage: 2.5V
Standard Charging Current: 1.25A
Charging Voltage: 4.20+-0.05V
Max. Continuous Discharging Current: 20A