First thanks for the reply.
@giz_60k, i will do my own battery analyze on the weekend. A friend give me a fresh pair LG HG2's for trying. Maybe it works better with them.
@Wayneo:I got the Therion 166 now for 1 and a half week, if the cells are empty i got 3.30 - 3.35 volts. I use my VTC5 Sets before in a Smok Alien. The cells got the same voltage if they are empty 3.30 - 3.35 volts. I charge in a XStar VP4 with digital Voltmeter.
Its the same remaining voltage in the Therion and the Alien.
This 15% value its not the "End of the World", but i like to understand everything.
Its only a bit irritating, if you look at your screen.
I will post after the weekend my results.
Again, thanks for your reply