You know how on an 18650 batt of 3.7V that it takes 4.2volts to be fully charged…
How much to be fully charged on a 3.0V CR123a?
(just got the Olight S1 and need to know)
Thanks in advance.
You can’t charge CR123a batteries, only RCR123a!
That’s right. But you misunderstood my question. I don’t intend on charging them. So how much will a brand new CR123a show as fully charged? I’ve got old CR123a batteries; 4 years old anyway and wonder how close to being full they are.
My apologies,
I have 2 pcs 3 years old Foursevens (unused) and they show 3.13 and 3.11 volts. My new olight shows only 3.08 volts
yeah i was going to say 3.13 off the top of my head for some reason too ….seems like an odd number after saying it .
I have some 12+ year old CR123A’s that still show 3.0V. They should have about 1500ma of life in them. If you take 25% off for the age of my 12 year old ones, that is still 1125ma or so of life left in them. I think on the CR123A chemistry, it stays at or just below 3.0V until the battery is depleted. I used one of my 12 year old ones until the S1 would not come on and it showed 2.6V so I do not think that voltage is a good indicator for “life left” like it is in the 3.7V LiIon rechargeable. I have good faith in the lithium primaries after I dug up my old ones and they still had good life left… I think with only 4 years old, they will not have more than a couple of percent of loss from new… maybe 1450ma vs 1500 ma new…
Thanks all.
After 30 mins of googling, I think I found something.
Brand new ones will show 3.2V maybe 3.25V on a meter, even though they say 3.0V on the battery.
Whereas Nitecore makes some that say 3.7V.
Greater than or equal to 3.2 V for THIS ONE when new.
Just measured an unused year old Titanium Innovations CR123A.
I get 3.22 V for a brand new Panasonic CR123A.