Did that, even went as far as changing the battery.
Upon new battery I saw the charge was full, and it didnt drain as fast as the old.
However, again half way and cannot charge it.
If I boot in original os and plug to the wall, within minutes the battery indicator is full green
But when I unplug its half way
If I charge on rockbox it indicates charging and after 6 hrs doesnt charge.
Updating to the current build right now