This is what prompted this thread.
I have brand new batteries, GA unprotected button top. After resting overnight they lost 0.04v. Not a lot but when I compare it to batteries that I have that are a year and a half old up to five and a half years and they’re resting voltage is better it makes me think as to what is the cause?
I know through experience once my resting voltages are 4.10v, 4.11v, the batteries are older, the runtime is less the capacity is less and no doubt they’re degrading which is natural after a period of time.
First thing to note is that the healthy batteries always come out of my S4 Plus at 4.19 volts. Never charges to 4.20 volts. That’s according to my DMM. T
They came off the charger at 4.19 volts. All four of them. The resting voltage for the Brand New GA unprotected button top are 4.15v after 15 hours.
Vapcell M11 and G53 are 18 months old. The 2 x M11 have a hundred Cycles and the 2 X G53 have 140 cycles. They are used every 3 to 4 days. They’re resting voltages are rarely 4.17 volts, usually 4.18 and sometimes 4.19 volts.
And then you have the most impressive because they’re much older. 2 X VTC5A and 2 X VTC5D are five and a half years old. They have around 300 cycles. I just started using them again because I’m getting two hikes a day in early AM and PM.I am starting to use some of my older lights.
I have left these batteries alone for months and they were still at 4.17 volts. Once in awhile 4.16 volts. Now that I’m using them again every few days they’re usually at 4.18 volts or 4.17 volts
I do know this with some sets of batteries, through experience, when one starts out with a lower resting voltage they seem to degrade quicker.
I still believe the GA’s are going to serve me well, but Wonder why, question is below.
I have the mentality that I always want to know the answer.
So after my summary, will be the primary question behind this thread.
To summarize:Resting Voltages.
Brand new GA UP BT. 4.15V after 15 hours.
M11 18 months old 100 Cycles. Resting voltage 4.18 volts.
Vapcell G53. 18 months old. 140 Cycles. Average 4.18 volts.
VTC5A and VTC5D. 5 and 1/2 years old 300 plus Cycles. average 4.17 volts.
Why are batteries that are one and a half to 5 and 1/2 years old with anywhere from 100 to 300 Cycles have a better resting voltage than a brand new battery?
I believe the chemistry for all those batteries are very similar or the same. And I was told by the hometown dealer that these Hi drain batteries will degrade quicker. That is yet to be determined in this case. What is determined is the older and used batteries have a better resting voltage than a brand new one.
Happy Thanksgiving!