A great performing 20700 flat top cell however is closer to be rated at 30A continuous.

5 leg version.  Price is per cell.

Specs from IJoy:

- Cut-off Voltage: 2.5V
- Dimensions: 20.4mm (Diameter) x 70.1mm (Length)
- Rechargeable: Yes
- Max Continuous Discharging Current: 40A
- Max Pulse Discharging Current: 85A
- Style: Flat Top
- Color: Black and Gold
- Rated Capacity: 3000mAh
 
Temperature:
Temperature range: -20 to +60 Degree Celsius
Monthly Self-discharge rate: Less or equal 0.5%
Temperature range: Discharge: -20 to +60 Degree Celsius, Charge: 0 to 45 Degree Celsius
 
 
IMPORTANT:
Fully charge before first use.
Never short (connect positive and negative size) battery.
Keep them always in battery case, or any other insulating material.
Never keep this battery together with metal objects (short circuit can happen if you do).
Never carry bare cell in your pocket with keys, change or any other metal objects.