Another post commented the FWxx design requires especially high tolerances. Perhaps they are higher than Lumintop, or most flashlight manufacturers, can consistently achieve.
They test the prototypes, but after that they may only test some random lights coming off the assembly line (my guess). They definitely don’t test each light, if that’s what your thinking. The person doing the testing probably doesn’t speak English so it would be very difficult to ask anything.
I am in need of a couple of the white o-rings that sit above the pocket clip, 1 is broken and another is close. Is there a source for them? I really do not like it when the clip spins and the tailcap is tight.
I’ve also had a couple of those white o-rings break. Managed to find a replacement black o-ring among my miscellaneous supplies that fit. But I agree it would be good to make replacements available.
When I bought some deep carry clip from Neal, I thought it was supposed to come with some white O-rings too but it did not. Either I got lucky with Lumintoplighting or Neal just doesn’t put them in the box.
Got my FW3A yesterday from the Amazon sale. I have a few new Sanyo NCR18650GA 3500mAh High Discharge BUTTON Top unprotected cells. After I inserted the cell from the head, the light briefly flashed to indicate contact. However, when I clicked on the e-switch, nothing happens, no light came up, holding down the e-switch doesn’t ramp up to down (no light came out at all).
I emailed Lumintop through Amazon, but haven’t heard back. In the meantime, I just remembered that I have some harvested flattop Samsung 24E unprotected from a laptop battery, so I popped one in, and the FW3A worked like a charm.
I plan to order some higher capacity flat top unprotected LG MJ1 to see if they work. So far, I think unprotected flat top is probably my best bet.