BayMoe
Newly Enlightened
I took the heatsink off my vga card and was using the U2 to check which core I have (r360 mind you) and suddenly the light went out. I immediately unscrew the light expecting to find a scorching hot 18650. Nope, wasn't that. Could it be a defective cell? Threw in another charged 18650 and still no dough. I stared into the head of the light while it was on and noticed that only half a die out of the 4 was VERY dimly lit . I love my U2 and it's my edc and will be on it's way to surefire. Sigh. The U2 spoiled me. The L2 and L4 just doesn't cut it for me.