[Al Skierkiewicz]

The curves look pretty normal for the varying ages of the batteries. I can't think why the manual would suggest that you don't go below the 10 volt cutoff. I will have to look into that. On our CBAII I set the cutoff for 8 volts so that we can compare to curves printed for the battery and to get a little more resolution on graph. The step seen on the new battery may have been a disturbance in the power line or it might be an indication of a bad/dirty terminal. One of the first things we did was change the CBA connector to a 50 amp Power Products connector to match the robot battery connector. There are a variety of factors that change as the battery ages. All of them contribute to a lower amp hour capability. Our batteries have a stated life expectancy of 400 charge/discharge cycles under normal use. I class our use as heavy and would discount that figure to less than 350.