ok thanks I understand. mesures done :
1 : 4,75
2 : 4,69
3 : 4,68
4 : 4,64
5 : 4,67
6 : 3,30
7 : 3,20
8 : 3,43
9 : 4,50
10: 3,36
So it confirm two things : the BMS do the job, and some cells are gone (6,7,8,10) note that the others are near overcharged not ?
The pack is in fact made of 40...