There are 10 singal wires, if you make 4S battery pack, you can just connect 4 wires.
It max can make 10S battery pack.
this board can use as 4S/20A, 5S/20A, 6S/20A, 7S/20A, 8S/20A, 9S/20A, 10S/20A PCM.
4S/20A charge voltage is 4.2V*4=16.8V
5S/20A charge voltage is 4.2V*5=21V
6S/20A charge voltage is 4.2V*6=25.2V
7S/20A charge voltage is 4.2V*7=29.4V
8S/20A charge voltage is 4.2V*8=33.6V
9S/20A charge voltage is 4.2V*9=37.8V
10S/20A charge voltage is 4.2V*10=42V
Note:
There are two connections ways :
1) Charge/discharge with different ports:
"P-" is the discharge negative end,"P+"is the discharge positive end.
" C-" is the charge negative end, "P+" is the charge positive end.
Charge current is 10A;Discharge current is 20A.
2) Charge/discharge with the same ports:
" C- " is the charge/discharge negative end.
" P+ "is the charge/discharge positive end .
Charge/discharge current is 10A