Burned my MMM!!!

[Urgeoner]

First run ever with the batteries. My charger has a screen where it has like 6 individual cell voltages, all displayed at once. like this:
3.5v() 3.4v() 3.5v()
3.4v() 3.4v() 3.5v()

and next to each voltage there was either a period(.) or a small similarly sized square that changed into a period then back to the square. I would like better instructions with this charger, and as it turned out, I had the balance wires completely the opposite way they were supposed to go. If the balacer is damaged how can I tell?