[Help] My battery is always at 100%

[Wolfgang]

IF fully charged,, the battery has a voltage of
4,09 V; there is a distance of 0.11V of a really full charged LI-ION.
Not charging up to 4.20V produces more load cycles.

So I had following notices:

4.09V 100%
3.76V 75%
3.74V 50%
3.61V 25%
3.55V 0%
3.48V 0% I Low battery. Please connect calculator to power source

2nd low warning: Critical low battery! Please connect calculator to power source immediately

Calc has gone out, immediately battery voltage metering with extech 520: 3.500Volts.

In addition to John Colvin:

Please take a look to:

http://batteryuniversity.com/learn/artic..._batteries


4.2V 100%
4.1V ~90%
4.0V ~80%
3.9V ~75%
3.8V ~65%


I have a lot of 14500, 18650, 18350 LIO ION protected and unprotected Cells in use for my torches and I have to handle them carefully if I use three or four of them in a 2000 & more Lumens beast.

Here you’ll find a lot of inforrmation:

http://www.candlepowerforums.com/vb/foru...ed891f7e15

@ hook and Sbybot:

Are all 4 pins of battery in touch?. I would open the prime for checking the battery’s and Primes pins.

Regards
Wolfgang