Battery for Convoy L21B Models (Gun Mounting)

Note: If your L21B with SFT40 or PM1 LED was purchased before 20/07/2023, then you need this battery here. Only these two versions are affected, all others are fine to use this battery.
 
If mounted on a gun, a button top must be used, not doing so can be a safety concern if the torch's spring dents the top from the gun's recoil. There's a pressure vent behind the positive terminal that you really don't want to block off.
 
 
Price is per battery
 
Battery specs:
 
- Nominal Capacity: 5000mAh
- Minimum Capacity: 4800mAh
- Nominal Voltage: 3.6V
- Maximum Voltage: 4.2V
- Continuous Discharge Current: 15A
- Approximate Dimensions: 21.4mm x 72.6mm
 
Buyers must be aware of lithium safety before purchase. Please read my thorough battery safety guide - here