The revised (v1.1) firmware for the Four Battery High-Current Battery Balancer.

This is an upgrade from the earlier 1410221A.HEX:

• Communication between two Balancers now works properly and they will act as a 5-8 cell/battery balancer (within the maximum 60V limit).
• The default cell low voltage threshold has been increased from 2.5V to 2.7V
• Serial commands must now be terminated with newline ('\n'), not carriage return ('\r').