n2mdk said:
There really is nothing bad that will happen to the scanner, the only thing you might do cause one of the batteries to discharge past it's voltage threshold so it balks at taking a recharge.
That's a good reason not to try to operate past the low-voltage warning.
If one of the cells drops too low, it will be essentially "dead" but current
still running throught it is essentially trying to charge it with the wrong
polarity...bad for that cell. I am not sure of the exact equivalence with NiMH
but with NiCD, the cell could short, rendering it useless. Now you're down
a cell and you might be able to "zap" the short, but that cell will be the
weakest and die first from that point on. Replacing the cell, you'll no longer
have all matched. In that case, it'd be best to redeploy the remaining cells
elsewhere and replace all scanner ones at one time; or replace the pack
if it isn't discreet cells, could be pricey.
Dave