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Unread 18-01-2012, 08:03
Unsung FIRST Hero
Al Skierkiewicz Al Skierkiewicz is offline
Broadcast Eng/Chief Robot Inspector
AKA: Big Al WFFA 2005
FRC #0111 (WildStang)
Team Role: Engineer
 
Join Date: Jun 2001
Rookie Year: 1996
Location: Wheeling, IL
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Re: Battery Performance Curve?

dsa,
Teams regularly draw more than 200 amps from this battery for short periods of time. The battery is capable of supplying in excess of 500 amps at full charge, again for a short period. However, at the high current, it will not be at 12 volts. In order to accurately predict your result you will need to gather data on how much current is used at certain times. Then using that data you can predict what might actually be your life expectancy. The critical factor is a battery that falls below 5.5 volts. This is the point at which the Crio will disable all output. At less than 4.5 volts, the power supplies on the PD stop working and power to the Crio and radio will fail.
If you are designing your mechanical to use the motor(s) in a high current state, be advised that the breakers cannot supply that current for long and the both Victor and Jag are not designed for sustained high currents.
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Good Luck All. Learn something new, everyday!
Al
WB9UVJ
www.wildstang.org
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Storming the Tower since 1996.