RCR & Charger Question

octaf

Flashlight Enthusiast
Joined
Mar 12, 2008
Messages
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There are RCR3.7v and RCR3.0v as far as I know.

Can both RCR charged with the same charger ?

If so, how does the charger recognize when to stop charging to prevent overcharging, on different voltaged rcr ?


Thanks in advance. :)
 
There are RCR3.7v and RCR3.0v as far as I know.

Can both RCR charged with the same charger ?

If so, how does the charger recognize when to stop charging to prevent overcharging, on different voltaged rcr ?


Thanks in advance. :)

Yes, I use the Ultrafire WF-138 charger which has a selector switch for 3.6v and 3.0v so I can charge both 3.7v and 3.0v RCR123s. It stops charging at 4.20v for 3.6v or 3.7v batteries and 3.60v for 3.0v batteries.
 
Thank you both, LumenHound & FLT Medic. :wave:
 
octaaaffffff!!! you've been around long enough to know this should have been posted in the Batteries section. Moving it there now.
 
Can both RCR charged with the same charger ?

No.

If so, how does the charger recognize when to stop charging to prevent overcharging, on different voltaged rcr ?
It can't.

The only way a charger can charge two different voltage cells, is if it has a switch. The WF-138 is an example. It has "3.0V" and a "3.6V" settings. The 3V setting in the example of the WF-138 is for charging LiFe cells, and the 3.6V setting is used for charging LiCo cells.

To make matters even more complicated, there are also voltage corrected "3 Volt" LiCo cells that have diodes incorporated into the cell, to reduce the voltage under load. These cells require a third type of charger that charges at a higher voltage than a regular LiCo charger to overcome the effect of the diodes.

Dave
 
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