I am a little late asking this, with my GTP being almost a year old.

I am just kind of curious. When I charge it, it reaches 100% & the light turns green. I leave it on the charger, light remains but the battery percentage drops down to around 96. Sometime after that it will start climbing back up & all the while the light remains green. I am not using the device during all of this, other than checking the meter.

What causes this weird behavior, I am just curious.

Thanks much