, Try to charge the unit is turned off. The charging current must drop to 0. In fact, he charged up to 100, but the charge current goes a little more, and it gradually drops to 0. If you do not fall, it means that something is not right. Heating and TD should not be. And if surges percent charge, or if shuts itself, not at 1% charge (as at 3% or higher). Then it is likely the battery.
So voltage accordingly should not squander sharply increase. The total charge is 4.4v, the unit itself is turned off at ~ 3.5-3.45v, in fact it is about 0%. you can see through AccuBattery.