Math is Hard-- C Rate ?
I am confused about how many amps in a C rate, if anyone can explain that again. Thanks. After getting the SiO2s late last year, I charged them to as full as they would get, which was at 14.6v wit...
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This is hard to see, but their charging graph uses "C" where they mean C20 and use a percentage of capacity for the amps.
https://www.google.ca/search?source=univ&tbm=isch&q=ESG+6GFM250&sa=X&ved=2ahUKEwjo9piq1cvuAhWYs54KHaW_BkgQ7Al6BAgLEBg&biw=960&bih=449#imgrc=XAXCb2YME4Xq4M
It all works if you already know what they are trying to say, but we really need a better way to "name" what exactly we are talking about.
I have been using "charging rate" for that, and then having to explain that means the "initial charging amps" wrt battery bank in AH. This is related to the "battery acceptance rate" in amps, which changes with SOC and voltage and type of battery.
As the battery voltage rises with its SOC, the acceptance rate falls at a constant charging voltage. If you raise the voltage, then at the same SOC it will accept more amps (up to a point of course but "generally speaking") Graph makers want a way to show the amps along the way during a charging profile.
So nothing to do with discharge rates, but something to do with charging rates. Looks like C-Rate for charging only applies to Lithium batts, since the other types reduce their acceptance rates as SOC rises, so the definition they give won't work for the time it takes to charge the battery.
Trojan is doing it "right", but it takes too much typing to fit on those graphs, so it gets muddled.
This is worse than velocity and acceleration!
https://www.google.ca/search?source=univ&tbm=isch&q=ESG+6GFM250&sa=X&ved=2ahUKEwjo9piq1cvuAhWYs54KHaW_BkgQ7Al6BAgLEBg&biw=960&bih=449#imgrc=XAXCb2YME4Xq4M
It all works if you already know what they are trying to say, but we really need a better way to "name" what exactly we are talking about.
I have been using "charging rate" for that, and then having to explain that means the "initial charging amps" wrt battery bank in AH. This is related to the "battery acceptance rate" in amps, which changes with SOC and voltage and type of battery.
As the battery voltage rises with its SOC, the acceptance rate falls at a constant charging voltage. If you raise the voltage, then at the same SOC it will accept more amps (up to a point of course but "generally speaking") Graph makers want a way to show the amps along the way during a charging profile.
So nothing to do with discharge rates, but something to do with charging rates. Looks like C-Rate for charging only applies to Lithium batts, since the other types reduce their acceptance rates as SOC rises, so the definition they give won't work for the time it takes to charge the battery.
Trojan is doing it "right", but it takes too much typing to fit on those graphs, so it gets muddled.
This is worse than velocity and acceleration!
