This has an efficient driver: https://budgetlightforum.com/t/-/2484
Crazy runtimes, yet powerful on 14500.
Cons, IT IS STILL OUT OF STOCK, GRRR!!! #¤%&#%!
It´s 30$, not 20 :(
Olight i2, only a bit over 20$ ?
Sorry, can´t get any other to my head now. There are tons of cheap AA-lights on for example DX but I cannot remember, how long they run on lowest modes.