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Cell capacity at different temperatures
#5
(07-20-2019, 09:34 AM)daromer Wrote: Of course. Thats why 100mah Range is Good enough to sort cells in for most People...

Putting cells into 100mah range bins can make sense as the actual values will average out because of the large number of cells.
Temperature changes affecting WHICH 100mah range the cells end up in could result in different capacity packs being made.
My repeated tests for the 2 cells appear to show about 1950mah when tested while it is cold (about 5 to 10 degrees C / 41 to 50 degrees F) and show about 2050mah when warmer (about 20 to 25 degrees C / 68 to 77 degrees F).
Without temperature being controlled (ie lots of peoples workshop/shed areas) If you make a pack in Winter and another pack in Summer or measure a large number of cells at night then a large number of cells in the day your pack capacities may vary (by 5% from the testing I have done) even when you use the same test result numbers.
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RE: Cell capacity at different temperatures - by Oz18650 - 07-21-2019, 03:06 PM

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