This BB9 short body is suitable for 22500 batteries and is compatible with W3Pro, T8Plus series and W3Plus/W7 flashlights. If you have these flashlights, you don’t need to buy a tail cap separately, just use the original tail cap.
You can use Weltool INR22-24 and UB22-19 batteries, which are more portable, but the battery life is shorter.
When using INR22-24 batteries and combined with W7 head, lumens and candela remain unchanged:
