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/...
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I have a separate VOM that agrees with the Rogue's display when connected to the Batteries, so the actual measurement of V seems ok. Temperature measurements also seem reasonable.
But it turns out that the Rogue's set point calibration was way off. IOW you set it to 13.2V float @25C but it uses 13.6V at float.
Didn't used to do that and I dunno when it changed ... perhaps when I rewired everything going to 4 GC2s from two.
Anyway, Rogue allows you to adjust the VTRIM value +- 0.5V (on a scale of +-20). Adjusting to -15 out of 20 seems to have fixed the baseline @25C set points. Bit disturbing that so much correction is required.
Now I'll re-monitor what it does at less than 25C and see if it properly follows the 5mv/cell/degreeC setting.
But it turns out that the Rogue's set point calibration was way off. IOW you set it to 13.2V float @25C but it uses 13.6V at float.
Didn't used to do that and I dunno when it changed ... perhaps when I rewired everything going to 4 GC2s from two.
Anyway, Rogue allows you to adjust the VTRIM value +- 0.5V (on a scale of +-20). Adjusting to -15 out of 20 seems to have fixed the baseline @25C set points. Bit disturbing that so much correction is required.
Now I'll re-monitor what it does at less than 25C and see if it properly follows the 5mv/cell/degreeC setting.