RCR1223 confusion

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Enlightened
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Jul 21, 2004
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Sadly, New Jersey
I've read about RCR123 referred to as 3.0V and 3.7V, my Tenergy brand is rated at 3.0V but charges to ~4.1V. I'm getting a little confused here. Are there RCR123s rated at 3.7V? If so, what do they charge to?:confused:
 
The Nano-chargers comes in two versions, one for 3.7 Volts and one for 3.0 Volts cells.
Maybe the Tenergy cells and charger are just a cheaper solution to the problem of wanting 3.0 Volts in a rechargeable packet the size of a 123A-cell?
If you seek and read about using 3.0 Volts rechargeable 123-cells, they are not recommended by anyone claiming knowledge about rechargeable Li-ion cells.
A part of the answer about the Li-ion rechargeable cell is is given here:

http://www.candlepowerforums.com/vb/showthread.php?t=167728

Inside the 3.0 Volt rechargeable battery is the same cell as in a 3.7 Volts battery, only a control-circuitry has been added to control the output to 3.0 volts.
The capacity is also being restricted by this circuitry!
And also be aware that Li-ion rechargeables are based on a not so very stable chemistry, and pushing the charge voltage above the 4.2 Volts limit directly into the cell may destabilize the cell and start the venting/gassing/flaming activity!
 
Yes there are RCR123 3.7v batteries:
RCR123 3.0v battery charges to 3.9v usually.
RCR123 3.7v battery charges to 4.2v
When these batteries are put under load is when they are closer to there rated voltage.
If you have a incandescent light that runs on 2 regular CR123 batteries would blow out immediately with 2 RCR123 3.7v batteries, but 2 RCR123 3.0v batteries will most likely work.
Confusing but I learned the hard way when I first found myself addicted to flashlights and CPF :laughing:
I've read about RCR123 referred to as 3.0V and 3.7V, my Tenergy brand is rated at 3.0V but charges to ~4.1V. I'm getting a little confused here. Are there RCR123s rated at 3.7V? If so, what do they charge to?:confused:
 
I have only used the Powerizer RCR123 3.0v 650mAh batteries, and never had any problems with the following lights:
1- Streamlight Twin Task incandescent/3 LED flashlight
2- Streamlight TL-3 incandescent flashlight
3- Pelican M6 incandescent flashlight
and all of my LED flashlights have taken them without any problems.
I can't speak for the Arc LS.
Would it be safe, then, to use an RCR123 3.0V battery in the old Arc LS`s?
 
I've read about RCR123 referred to as 3.0V and 3.7V, my Tenergy brand is rated at 3.0V but charges to ~4.1V. I'm getting a little confused here. Are there RCR123s rated at 3.7V? If so, what do they charge to?:confused:
Yes, it is a little confusing. From what I have been able to figure out, the Tenergy cells are in fact 3.7V, and are in all likelihood mislabeled. They are from China after all. They are however, very good batteries and I have maybe 20 of them that get used regularly and they are quite dependable. I have initiated 2 friends to them as well and they have the same experience as I. They come off the charger at between 4.1V and 4.2V. We have been using them in lights that most would not think of with no problem for some time.
 
The world of RCR123As is confusing enough without misprints. Anyway thanks all for all your help folks. I've learned quite a bit.
 
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