[Al Skierkiewicz]

Tris,
I believe the "may" in the language is meant that you may or may not charge the battery in the robot. If you choose to charge in the robot then the IFI charger is to be used. The issue I have with the on robot charger is that a charger with no designed in safeguards will alllow the full charge of the main battery to be dumped into the backup battery. This is a dangerous condition as all additional current will be turned into heat at the backup battery. The other problem (the one that is more likely) is that the charger will allow a sneak path for the main battery to keep circuits on the robot energized at the full potential and current of the main battery or by the backup battery alone. In either case, it gives the team a false sense of security thinking that both batteries are fully charged when they are not.