Code now public! BLF A6 FET+7135 Light. Short 18350 tubes and Unanodized Lights Available

[ohaya]

@ToyKeeper

@weren

I gave one to my uncle and he’s telling me that when he had it mounted on a bike and riding somewhere flashlight was going off and on almost every time he hit a small bump on the road…
Do you have any idea what I can check here?

If the springs were weak, or if they have become deformed by heat, they can get loose. To fix this, stretch it out or replace the springs and do spring bypasses. This should allow it to hold the battery firmly in place without the excess heat making it get out of shape.

You could also try of have him try different, maybe longer (e.g., protected) batteries, and maybe flat top vs. button top batteries - that’d be a lot easier if you had the light in your possession though.

Also, check the retaining ring in the head holding the driver and the retaining ring in the tail holding the switch and make sure they are tight. You can use a pair of pointed tweezers to do that.

Somewhere, Toykeeper also mentioned to try to make a paper clip into a circle and put that into the tailcap. The threads on these are anodized (why? I don’t know why for a tail clicky, but maybe they expected an electronic switch?), so the back end of the battery tube MUST make contact with the retaining ring in the tailcap to get the continuity.

There’s also a thread somewhere for troubleshooting this light…

EDIT: Here’s the thread: BLF A6 FET+7135 Light Troubleshooting and Mod thread

Jim