I just pulled two of AW's RCR123s off my Ultra Fire-139 charger. I checked the voltages on both of them. One read 4.17V, and the other read 4.06V. I put them both in my E2E (with LF EO-2R) and no light! I thought that maybe the charger bumped up against the PCB, and I heard that running the cells in a light would reset it. Not the case here. I tried the bulb on a few other cells, and it worked fine. Also the 4,17V cell works, so the problem is the 4.06V cell. Any suggestions? I am going to let it sit overnight and see if there is any change.
RCR123 Problem
- Thread starter jugg2
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mdocod
Flashaholic
visually inspect the cell for physical damage, especially to the strip along the side that completes the circuit for the PCB, the E series bodies are notorious for being tight fits and that could damage the cell.
A similar problem cropped up recently in an E series body...
You might also put it back on the charger for a moment to see if anything changes...
What is the history of the cells?
A similar problem cropped up recently in an E series body...
You might also put it back on the charger for a moment to see if anything changes...
What is the history of the cells?
The cell doesn't look physically damaged, and they fit in the body easily. When I put it back on the charger (either channel), it charges for 1-2 seconds, then the green light comes on.
EDIT: BTW these cels are brand new. They have 2 shallow discharge cycles on them.
EDIT: BTW these cels are brand new. They have 2 shallow discharge cycles on them.
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mdocod
Flashaholic
sounds like the PCB has gone south. contact AW, see if he can help you out there. If they are that new I think you will be taken care of....
Bullzeyebill
Flashaholic
Aren't we learning on CPF that it is not safe running batteries of unequal voltage in a flashlight on purpose particularly those using LiIon chemistry. Why am I having to say this. RANT! RANT!
Bill
Bill
mdocod
Flashaholic
that amount of voltage variation isn't enough to be of concern for testing purposes. Nothing life threatening has been done here.
Perhaps you are thinking about the consequences of running sets of CR123 primaries that are in a different state of remaining capacity. Which is a totally different issue that really wouldn't apply to a protected Li-Ion cell.
Perhaps you are thinking about the consequences of running sets of CR123 primaries that are in a different state of remaining capacity. Which is a totally different issue that really wouldn't apply to a protected Li-Ion cell.
I always check my rechargeables that I run in pairs. I the difference is more than .05V in them I find other freshly charged cells to pair them with
LumenHound
Flashlight Enthusiast
jugg2, you may find this AW 14500 protected cell - reads 4.07 volts but won't power my LF5 thread interesting.
That sounds exactly like my problem, except my light won't even flash.
mdocod
Flashaholic
And that's why we recommend AW around here, he's in touch with his customers and takes good care of us.
LumenHound
Flashlight Enthusiast
Indeed.
I'll bet 90% of his orders are repeat business because of this. The fact that he's taken the time and trouble to get several improved safety features built into a wide variety of his cells also goes a long way with us.
