track of charging via battery pack

Today I try to track the charging of HTC via battery pack
and write this blog via hp too
Seem that both have failed

As supposed to write that the HTC drain off at 1pm and
register under battery widget about 10%
After put in battery pack and run overcharged
it registered at 2% with lowest 3189mv

The charinging stop at 3pm and I continue to charge via main.
The full charge is done at about 4:30pm

I shall do the experiment again