Nice review, Narwhalz. Very comprehensive for lack of an LPM. Not a bad price for this laser, but I do wonder what the optical power is. Using two 16340 batteries tends to make me think the power is lower than others, but IDK for sure.
Single use ? You mean non rechargeable ........why would anyone buy non rechargeable cells today ?
Don't buy cheap cells, buy IMR or other high drain formulation cells which are high drain low sag for high drain devices such as lasers, I like EFest.