How about the CQG? http://www.cnqualitygoods.com/goods.php?id=1223
48mm head. It looks somewhat bright for the hotspot. It won't touch STL-V6/V2, but even the 2 x 18500 option does not fit a pocket.
But hold your horses, the DRY with Turbo actually gets 25k cd on my meter, and the CQG with 48mm head probably gets around the same ballpark relatively. (my meter under reads)
You might have to get the Sunwayman V60C. But i guess too expensive.
Do you have a C8/Keygos? The Fandyfire STL-V6 can use that tube as well as some others.
https://budgetlightforum.com/t/-/3155 <<-- you can see some shorties inside.
It's a cheap light, so you can afford to buy a charger as well as batteries. The Trustfire TR-001 is cool and pretty cheap, i have it, works well....just that it charges a bit slow. heh... but generally ok and terminates decently and consistently.