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Unread 09-10-2008, 01:21
Eugene Fang's Avatar
Eugene Fang Eugene Fang is offline
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Re: First: 2008 Batteries are D-Y-I-N-G.

Quote:
Originally Posted by Al Skierkiewicz View Post
Pikat,
I know that this will sound weird but teams who draw lot's of current during driving can easily draw the battery below 5 volts during those high current demands. The internal resistance of the battery is 11 mOhm so a 400 amp draw will drop the terminal voltage of a fresh battery by 4.4 volts. At the end of a match where the internal resistance rises, this resistance will cause a further voltage drop.
Good point. I was referring to the fact that we were running our robots for hours at a time (not high load, just driving it around) without changing the battery. In other words, these lead-acid batteries don't like to be fully discharged.
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Last edited by Eugene Fang : 09-10-2008 at 01:23.
 


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