question

Hi Sam. Your 30mV is correct. It's applied in the mppts, and is a simple V correction to Abs and Float V's. No capacity adjustment needed.

That '%cap/C' figure is another animal. With that the BMV can adjust it's battery capacity figure to allow for temp, with subsequent better accuracy in reported SOC. That's a separate figure, one best supplied by the batt maker if it's available at all.

As an example, lets say you have batts at 35C. There they can hold more Ah, but need less V to charge. The mppts will adjust the charge V's downwards (note that mV is a -ve figure), and the BMV will raise the batt capacity in its calcs to give a better SOC.

Make sense?

Thanks so much John. To make sure; the temp compensation is always negative?

I think it makes sense for the %cap/C. I understand the logic, but I don't see that in the spec sheet of the batteries, except that they graphed it? Am I missing something?

http://www.outbackpower.com/downloads/documents/energy_storage/energycell_nanocarbon/energycellnc_specsheet.pdf

106nc batteries.

MANY thanks!
sam