Large Backup Battery

[billbo911]

Originally Posted by Vikesrock

According to <R73> any commercially supplied 7.2V NiCad may be substituted for the supplied backup battery. Your question appears to asking about making a custom backup battery of some sort which I would say is not legal. Purchasing a 7.2V NiCad with a higher capacity does appear to be legal and would likely be the best solution to pursue.


emphasis mine

In the past, the backup battery, regardless of capacity, needed to be charged with the KOP charger, or the custom circuit designed by IFI. This no longer appears to be the case. PLEASE VERIFY WITH A QUESTION TO THE GDC!! I would hate to steer you in the wrong direction.

<R49> The 7.2v backup battery may be charged on or off the ROBOT. When off the ROBOT, the
battery is to be charged with a 7.2V backup battery charger. When mounted on the ROBOT,
the backup battery may be charged from the 12VDC primary battery by using the custom
charging circuit available from Innovation First Inc. or any similar charging circuit (note: IFI
will provide the design for this circuit on the IFI website, however teams must obtain the
parts for this circuit and assemble it themselves). The use of this circuit is strongly
encouraged.