UltraFire C3 Cree 1xAA 1x14500 Flashlight SKU 1993

UltraFire C3 Cree 1xAA 1x14500 Flashlight (with Holster)
http://www.dealextreme.com/details.dx/sku.1993

UltraFire 3.6/3.7V Battery Charger
http://www.dealextreme.com/details.dx/sku.1251

Ultrafire 14500 3.6V 900mAh Protected Li-ion Rechargeable Batteries (2-Pack)
http://www.dealextreme.com/details.dx/sku.6240

NOTE These batteries do not work with the Ultrafire C3 Cree..

Category:

Science & Technology

Tags:

• deal
• extreme
• ultrafire
• c3

[neilyboy]

I can assure you I put the battery in correctly.. idiot.

[619dbest]

pls can you tell me the size of the o ring ?

[D3MAK]

use the stand on the multimeter ffs!!!

[h0M3bReW3r]

the protected ones are too long. like by 2mm I had the same problem. I got unprotected 14500 and it worked fine then.

[xenonkay]

Better late than never, but...

There was neither light nor magic smoke on activation with the 14500, so it was likely a contact issue.

The tailcap threads are anodized, which means the very end of the tube is the electrical contact.

The length of those particular 14500s probably either prevented you from screwing the cap down fully and pressing the tube against the metal ring inside, or the extra spring pressure forced something out of contact.

[lambition]

Li-Ion cells are 4.2V at full charge. So, what you are getting off the battery is correct voltage.

You will read different voltage if it is under load.

It appears the reason your battery did not work on your flash is because positive terminal of the battery is not sticking out by much as with AA battery. Put some solder blob (as bstrickler suggested) on positive contact point of the flash. that should fix your problem.

[bstrickler]

Where the positive terminal goes, is there a solder blob inside the flashlight? If not, theres your problem. I bought a Trustfire TR-801 (or 802) from them and the 18650 wouldn't work until I added a solder blob to the end of it. You can also try ordering one of their 6-8mm Neodymium magnets and putting that at the positive terminal of the battery. It should work then.

[EddyTheDevelopper]

;) lol he first put the AA Bat. right in the Flashlight and the second 3.6V bat. he put wrong into the Flashlight! just have a close look

[edMerican]

3.6v protected cells at full charge run 4.2 volts nominal. not sure why but thats the way it is and has laways been...