Battery for Convoy L21B PM1 & SFT40 models prior 20/07/23

These are specially for the Convoy L21B PM1 & SFT40 variants that I sold prior to 20 July 2023. All new stock uses this battery.
 
I had installed a spring inverted since this was the only way to allow gun mounted use for these two lights at the time. They were released to be only for handheld use, so I had to modify them. The large button top helps it to make a connection to the spring and also provide reinformement to the top for mounting (see 2nd image). A regular flat top 21700 can still be used, but mounting it is your risk.
 
 
Chargers I've checked to be compatible:
 
Efest K1
LiitoKala Lii-202, 402
Nitecore UM2, UM4
 
 
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