A simple way to charge SRK batteries within flashlight. 
Wow nice
How long does it take to charge?
Can you list the components?
Thanks for posting this cool mod!
I didn’t tried with fully discharged cells. charging current is 1A
Components:
TP4056 Micro USB charging board –1
Pin & Socket - I salvaged this from old CRT monitor board.
Two small rubber pads to used as spacers.
Cool!
very nice!
Thanks for the components