SUCK!!! on full brightness, i am LUCKY to get 15 mins. I have tried both batteries i got. i use the Shekor charger. my 17650s work fine in my surefire but the 14500s only last about 15 mins on full bright where a NIMH from Duracell last almost 2 hours! but not quite as bright, I use the light at work and it has left me in the dark several times!! UNCALLED for. is there any better battery than the protected 14500? maybee it is the protection circut cutting off too early as the light itself will run of .98 volts...
