A while ago I read a thread that had a mod which used a cheap flash light, a KPR112 Krypton bulb, and 3 x primary 16340 cells. The bulb was obviously being over driven, but the light was pretty bright for its size. I still have the cheap flashlight that will hold 3 x 16340 cells, and was wondering what a good bulb would be for rechargeable 16340 cells? Since there is a 3.6 volt increase with the 3 x rechargeable cells compared to the 3 x primary cells voltage, what would be a good bulb to use? I don't mind if it is over driven a bit, but don't want the bulb to burn out in 20 minutes.
Any recommendations?
Any recommendations?