Continued from previous post...
Voltage up to 4.02.
And finally reaching 4.19.
After being at 4.19, the board continues to run, but the charge light goes out. I think when the light is out, it might still be trickle charging to the battery, with constant voltage and lowered current. I say this, because the reported voltage on the voltmeter was still 4.19, yet when I unplug the USB charger from the wall, I get this drop to 4.17 volts. It is also possible that drop is simply from the load of the board on the battery.
Either way, it shows that the batter