Three UltraFire cells with 3 different bogus cells inside.
I also received one which only weighed about 50% of the normal 48 grams for a current #18650 cell.
I haven't opened it up yet, since I know it is bogus.
Weight your "off-brand" 18650 cells and throw away any that don't weight 47-48 grams.
One of my customers had a new light with one of these UltraFire cells in his mouth . . .
when he noticed it buzzing.
He threw it down on the ground, and it blew the end of the light apart.
Please only use cells that have passed the UL#1642 standards for safety.
LarryDFW