Samsung 30Q is a brilliant all-round battery and with a 15A max discharge can handle sub ohm builds down to 0.3 Ohms without issue. The Samsung 30Q batteries are flat top so please check your mod is capable of using Flat Top batteries before purchase.
Flat Top Nominal Capacity: 3000 mAh
Nominal Voltage: 3.7V
Discharge End Voltage: 2.5V Max.
Continuous Discharging Current: 15A Dimensions:64.85mm(L) x 18.33 mm (D)
Operational Charging Temperature Range: 0 to 50 degrees C (best below 45 degrees C)
Operational Discharging Temperature Range: -20 to +75 degrees C (best below 60 degrees C)
You can store them for 1.5 years at -30 to + 25 degrees C, 3 months at 30 to 45 C and 1 month at 30 to 60 C (in other words, store them in a cool place and they’ll last longer)
Price is per battery.