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Unread 15-08-2013, 09:27
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IT'S THE BUMP N' DUMP
AKA: Evan Grove
FRC #4536 (The Minutebots)
Team Role: Mentor
 
Join Date: Apr 2013
Rookie Year: 2011
Location: Minneapolis, MN
Posts: 657
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Re: BatteryBeak: Utility of making internal resistance and state of charge measuremen

Quote:
Originally Posted by Al Skierkiewicz View Post
Win,
1. If you deplete the battery in one two minute match, you have an inefficient drive system. If your robot suddenly starts to do this, you have a broken drive train.
2. Don't use 6 motor drives simply because you have they are the best. I can show you more teams that eat a battery than get a benefit from the multi-motor drive.
3. If you are only using 4 motors and succumb to rule #1 above, you have chosen the wrong final gear ratio for the game. More important if you are only using two motors.
4. A battery should last long enough to drive in two or three matches minimum before running down.
5. Never trust any of the above rules, always use a freshly charged battery.
6. Even batteries that come right off the charger can be bad and fail in a match.
7. The robot is talking to you, listen to what it is telling you.
making this into a poster. We actually had an interesting occurrence related to rule 6 at champs. One of our 2012 batteries came directly off the charger, 13.7v. After the match, the battery was around 8v. We figured it was a fluke and threw it on the charger. about 5 minutes later, I go and check this battery to see if it is ok. The thing is hot(as in burn-your-hands hot) and still at 8v. Long story short, nothing is a fluke with a battery.
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FRCDesigns Contributor | "There is only one corner of the universe you can be certain of improving, and that's your own self." -Aldous Huxley
2012-2016 | FRC Team 2338: Gear it Forward
2013
Wisconsin Regional Winner 2014 Midwest Regional Finalist 2015 Midwest Regional Chairman's Award, Finalist, Archimedes Division Champion, IRI Semifinalist 2016 Midwest Regional Chairman's Award, Finalist, Archimedes Division Gracious Professionalism Award, R2OC Winner
2015 | FTC Team 10266: Mach Speed
2015
Highland Park Qualifier Winner, Motivate Award
2017-???? | FRC Team 4536: The Minutebots

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