That’s very strange I tested it for about 2 hours before I sent it to you and I didn’t have a single glitch. Are you sure the tail cap is tight and making a good connection? Trying using it with a jumper wire in place of the tail cap and see what happens .
Also if you are using flat top batteries you might need a magnet in between the two batteries.
I am using flat tops and I do have a magnet between them. The only reason I think it is the switch is because no matter how tight I get the tailcap or how many times i take it off and put it back on it wont turn on. But as soon as i tighten the collar it works.
That sounds exactly like a bad connection between the batteries, try some magnets between the two bateries. I used button top batteries and tested the shit out of it. I didn’t have any type of problem at all not a single glitch. Try some button top batteries or a magnet in between the flat top batteries.
Talk Soon,
Erik
I have been using magnets between them the whole time.
Possibly the batteries are too long or too short and the ones Erik used were a better length for the light?
Erik,
what batteries did you use to test the light?
If the batteries are to long I would suggest that this will cause a problem pushing on the driver. When the batteries are placed in the tube and they came level with the end (using protected batteries) I had a similar problem. The threads are anodised so for a proper connection the ends should have to be screwed all the way down. It may be shorting on the led. Try unscrewing the lens slightly as this will move the reflector away from the led.
What batteries were you using and what batteries do you use now?
I am using King Kong non protected with the supplied small magnet between them, about 1 mm in thickness.
http://www.intl-outdoor.com/2-pcs-kingkong-icr26650e-4000mah-liion-battery-p-136.html
These sat aprox 3mm below the top of the battery holder. Any batteries that sat higher would not work. It seemed that it would distort the driver causing a malfunction. If E has put the same driver as Foys in yours I would suggest that battery length would be even more critical as you will only have the spring on the tailcap end.
If you leave the tailcap off and run a wire from the negative end of the battery to the outer tube and hold slight pressure, does it work without fault?
If i run a wire from the end of the tube to the end of the battery it works without fault. The more i fiddle with this the more it seems to be the connection with the tailcap and the end of the tube. I am using flat top king kongs with a magnet as well.
How far do the batteries sit down from the top of the battery tube?
I havent measured exactly but the picture foy has on page one looks indentical.
I used some protected Trustfire Flame 18650s with the supplied spacer tubes. I ran the light for over an hour it’s wicked impressive.
If there is a problem in the switch 9 times out of 10 I have fixed switches by squirting a small amount of this product in them. May work?
byarnell05 -
My JM05 is super picky about battery placement . . . . too snug against the driver or tight against the tail cap and it doesn't seem to work. At one point, I actually thought I had a failed switch and swapped it out. (switch was fine) Remove the head and with your fingers, gently try to turn the pill/driver to just a little snug against the reflector. If that doesn't work, back it out a little and try it, possibly back it out again. What you're trying to do is get it just right between the pill and the tail cap spring.
All of my 26650 batteries are King Kong flat-tops. If I use a particular two of them, the light will only work without a magnet . . . . another two and it will not work unless I use a magnet.
Also, make sure the tail cap locking ring is tight. (inside the tail cap, with two dimples for unscrewing) Sometimes it loosens a bit each time the tail cap is unscrewed.
Foy
Thanks Foy,
I have begun to notice some of the things you just mentioned. I am able to get the light to work but like you said it is very picky! Thanks everyone for all your help. Btw this thing is ridiculous! I played around a bit at night the other night but im looking forward to really being able to test it out.
It's a killer flashlight. I was surprised how well it throws.
JM05feverFoy
This is my first 26650 light and I really like the larger size. I can’t wait to see if Erik can mod the other 26650 light I had sent to him.
What did you send him?
Foy
http://www.intl-outdoor.com/lxp-2126650-xml-u2-flashlight-p-413.html
Hopefully he can put in one of his 5 mode no flashy 3.5A drivers. The only sad thing is I went out on a limb buying this light and just a couple days ago I read Old-lumens review of the host version of this light found on CNQ and he wasn’t too impressed with it. I hope this one is of better quality. If not oh well i guess. You win some you lose some.