Topic: Somebody worked with the charging controler bq2710?

All greetings.
It was fastened with  the chip and there is a heap of questions on which  while answers did not give (probably, cannot correctly ask a question).
In  the schedule of a charge and, just in case, a broad gull of which I did it.
Across - time, on a vertical - the stuff described in a legend.
Capacities in mAH, a current - in mA, time - in seconds, percent, by itself, in percentage. wink
1. After any moment (~250 second) the current (a red line) makes a fresh start sharply, then more and more smoothly to fall.
As charge time is calculated under formula TTF = (LMC-CAC)/CURR it turns out that time before the full charging gradually increases.
[off] the Formula purely qualitative, but the main thing that a current in a denominator. LMC is the full capacity . On the schedule it is not shown, since at it value 2010 mAH, it will be too high. [/off]
2. On reaching a current of any threshold value the charge percent sharply springs from 14 % to 100 %, CAC jumps up to LMC, and TTF, accordingly, becomes equal to zero: charging is ended.
And how in such conditions to calculate percent of a charge and the real time which has remained before the full charging?
And still a question which I now and itself will look, but nevertheless: whether really Li-Ion batteries are charged by a direct current? All life me learned that the charger should retain constant level of a current before achievement of any pressure of a cut-off which means that  is charged. With Li-Ion not so?
UPD: Esteemed about charging Li-Ion, it is valid at a stage 1 there is a charging by a direct current, then - constant pressure. It seems that  works in a mode of 1 all to steam of minutes, and then passes in a mode 2. (See the second picture)