Quote:
Originally Posted by DonRotolo
The CBA4 is great for overall battery health, but not readiness for a match.
Internal resistance indicates the maximum current the battery can deliver, the lower the resistance the higher the current.
State of charge tells you, with some small inaccuracies, how fully charged a battery is, meaning is it ready to do its thing.
V0/V1/V2 tells you what kind of use you can get from the battery at different current draws, and for FRC the 18A value is the most useful. These values are somewhat related to internal resistance.
To determine which is the next battery to use in a match, we check SoC only, if it is OK we go with it, otherwise find another battery to check.
We do rank our batteries on internal resistance, the lower (better) ones get more play time.
Eventually all batteries go bad - then we recycle them...
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So it seems simple: the legal charged battery with the lowest internal resistance?
I'm imagining a side task for our electrical and programming crew using an Arduino/RasPi/whatever they feel like, where the Battery Beak reading is taken off the charger, the battery is stored, and The Next Battery is lit up automatically so we don't have to think before grabbing a battery. The trick would be determining what data to use, and that seems like a jumping off point.