question. . .
in the circuit. . . the batteries are series strings paralleled together, right?
OK. is the charge wires in the center of the strings like:
Example 1
here
*
+ + + + +
8 - 8 - 8
- - - - -
*
here
or are they wired like this:
Example 2
here
*
+ + + + +
8 - 8 - 8
- - - - -
*
here
If the charge wires are in the center, it could be that those are getting the best charge.
Adjust the wiring as in example 2 so that each battery string has a better chance for an equal charge.
Doug