5mv/cell/degreeC
Theoretically my mppt solar controller is supposed to adjust the Absorb and Float set points by -5mv/cell/degreeC against a 25C standard. I have a 12V bank of 4 GC2s. So that is 6 cells? or 30mv/...
Forum Discussion
You are correct. If you expand the temperature range you'll see a significant change in charge voltage. For example, at near freezing your Float voltage will be maintained at almost 14 V, and at 100 deg. F the Float voltage will be maintained at around 12.8 V. The Bulk and Absorb rates will all be correspondingly higher, too.