Modify a 5 Mode eBay Flashlight to a 1 Mode 

The "MOSFET" you tried to identify isn't a MOSFET at all, it is the micro controller with integral MOSFET. You simply bypassed the whole works, leaving just the current limiting resistors in the circuit.

wow, I just bought 2 and they had the same driver boards as the one in your 8 year old video, some things never change, thinks for your help, I have converted mine and they working fine, Thank You.

This is so freaking helpful! Thank you! I needed headlights for my electric skateboard, you just saved me from having to buy more flashlights!

Yes! I knew there was a way to do this out there, thanks now I can keep the aux lights on my motorcycle from changing to strobe when I hit the brakes.

Nice work G! Multiple modes are lame.

Thanks for posting, finally I have a good flashlight working as a flashlight.

Thank you! I did exactly the same thing to "Elfland" flashlight off Aliexpress. Same circuit board, same method works 100% Thank you!

Thank you so much dude!!! Excellent

If not mistaken, the HQ6C1 chip has the negative (-) in on the single pin with the out on the bottom left pin and the gate on the bottom right pin. The positive (+) is common.

great info, thank you so much

The navy guy is right. I ran into flux being conductive & learned the hard way. I use a pair of cuticle cutter instead of side cutters for things like this they work better. I'm new to the SMD stuff & flashlight circuits. Any ideas how I could convert a flashlight to handle a series battery pack 7.4v from parallel battery pack at 3.7v? I hate the fact I can't use my charger & single cells.

I did the lead hack and i may have out a bit to much and must of shorted the capacitor cause now its not as bright. Am I able to make a jumper so it's just on and off and make it bright again?

Or.... you could just solder the neg wire straight to the grounding edge, bypasses to whole board.

There isn't enough current to fry the led anyway, you can just wire straight into the housing and negative contact and you're good, no need to do your studying and bridge specific stuff.

Unfortunately the last flashlights I purchased cannot be open like yours. The moving part is just one piece of aluminium, and the whole assembly is probably held in place with a plastic ring pressed into the opening. I could probably break the plastic, but then the whole thing falls apart, so I'd need to glue it somehow into place...

I hate disco mode the most! Thanks for the vid!

Totally worked! Thank you!

Much easier way is to just use a number 2 pencil and color or draw on the capacitor.. Done.. You may have to go over it several times but the graphite shorts it out causing it to not have memory..

Ultrafire 501b has same board, just solder the negative to the edge of the board and it bypasses the board completely. None of this screwing around, takes like 10 seconds.

Can you do a video modding an XLightFire C15 from all 5 to just High?

Nice scope !

Is there a way to keep it on strobe mode?

will this work with the u5 cree led 3 mode lights?

You sure can work with some very small stuff. I would just buy a flashlight that did not have those modes, I have several, some are those free HF ones and others I had for years and none of them have "modes" on them.

Good job, but why not make your life easy? Connect the LED wires to the battery terminals directly.

As helpful as this is, you really need to write down what you want to say. You rambled a lot.

Is there a way to go from the "standard" 5 mode to "standard" 3 mode? High low and stobe?

Simply make the blue wire go to the outside ring. I just did it to three flash lights. They work perfect. One click on one click off. Ron DLH you made a tedious-long video with a way too complicated solution . Sorry for you and your 3.11 K subscribers. Admit you are wrong EDIT your video and save people hundreds of hours.