I saw the bottom of kreisler’s post.
“UltraFire Gray Protected red marked cell 254mAh-0.1A (repeated tests: 261mAh, 260mAh), or: typical if not charged fully to 4.200V: 245mAh) UltraFire Gray Protected *unmarked cell* 225mAh–0.1A, rest offline voltage 3.3V (repeated test: 229mAh)”
What is does it mean by red marked cell and unmarked cell?
There are 2 more options for protected 10440 which might get popular.
Hope there will be reviews for the batteries soon somewhere.
They could be identical or clones of those mentioned in the OP.
The protruding nub of the ultrafire one looks different as it looks smooth in the third picture on the site.
I have never tried 10440’s as of yet. While I was buying a couple of AAA Balder TD-0 I decided, what the hell, and grabbed a couple of cheap ultrafire 10440.(not a brand I would normally buy). As its taken so long for the lights to be shipped, I’ve since ordered a couple of AW ICR’s and an IMR, so I guess I’ll be exploring the world of 10440. I already own a UltraFire WF-138B (10440/14500) charger with a max charge rate of 250 mAh, so I guess I’m good to go.
Lucky it was in the charger ! + its a protected cell , so the protection circuit probably cut in .. + low state of charge , + it was an AMP meter , so probably may have killed the meter rather than the battery going boom .
Old4570 I did the same thing with a 16340 battery on my ultrafire wf-139 and Trustfire TR003P4 the results are
WF-139 varying 0.39 to 0.41 amps
Trustfire TR003P4 0.10 to 0.13 amps
The way I did it was Connected the negative cable the the positive battery and the positive cable the the charger Like you did in post #28 last pic.
My mistake one 16340 battery was reading 4.00v therefore got the above readin for the amps if it was empty then the charger would have charged at .460amps.