[Jim E]

Is it too late to redesign your custom circuit to run off of 9V?

That would provide a stable threshold even if the battery voltage drops to say 10V as it could during a 2 minute match.

I've noticed that if a battery gets too low, the 24V booster voltage to the cRio will fail. I'm not sure of what the cutoff voltage is, but the robot will not run when it happens.

Keep the batteries fully charged this year when going to field.