TrustFire 2500mah TR18650 batteries info here

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Feb 13, 2008
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Toronto, Canada
My first post here, hi everyone, i thought someone could use this information as i was looking for it and couldn't find it here.

I just got 2 TrustFire 18650 cells off of ebay rated at 2500mah they were very cheap. I tested their voltage and one measured 3.76v, the other 3.73v they seemed pretty drained to me, i was worried they might be dead.

I charged them on my DSD charger with the stock power supply it took 5 hours each, they both charged to 4.2v (as that's the cuttoff voltage of DSD), after an hour the voltage dropped and fell down to 4.13v and the other to 4.16v.

I decided to discharge them on my Triton Charger to measure their capacity. I discharged at 600mah down to 3v, the 4.16v cell showed 2440mah was discharged from it, the other is still in progress i will update shortly.

This cell came pretty close to it's stated capacity, i'll be using it in my ultrafire c2 i read somewhere it will provide 4hrs runtime, they are a bargain for what they cost, i'm very satisfied with this purchase, hope this helps somebody decide which ones to get.

I also read somewhere that if you use these in a higher drain devices such as 1.5A+ the voltage sags, so you might be better off with some AW cells or similar.

EDIT: I just found some more info and a graph on these cells here http://www.candlepowerforums.com/vb/showthread.php?t=188515
 
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Blue Trustfires are reported to have a pretty reasonable capacity.

I spent about 20-30 minutes looking for the thread I read it in, and this thread was all I could come up with. I'm sure I looked at another one though.
 
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