Burgerman wrote:steves1977uk, you are supposed to have all the parallel ones linked with a bar. And only need each series sets linked with one bar. As it is, any difference in cell resistance will mean a different voltage per cell under load, and those thin balance wires will be trying to balance a x amp load... That's probably why it never looks very balanced as you charge.
BM, you are really paying attention.
That is not a proper setup.
You should do parallel connection first, then in series.