Higher Voltage in MyMidnite?

Started by RedSerge, October 04, 2024, 10:02:10 AM

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RedSerge

I am hoping someone can enlighten me:  I recently managed to get wifi setup at my rural cabin and setup my Midnite Classic 200 for access to MyMidnite.  While it's reporting isn't always regular, it gives me enough info that I will be able to monitor and go out to sweep snow off my panels if need be.  I currently have EQ off and have set voltages according to the Rolls Battery charts which means a max voltage of 29.4v during bulk charging on my 24v system.  When I review the data on MyMidnite, I am seeing battery voltages as high as 30.2V during bulk charging. Any ideas, am I missing something?  Thanks in advance!

ClassicCrazy

Do the batteries get cold ? Temperature compensation will raise the charging voltage. And that is what you want it to do to properly charge batteries that are cold so they fill up.
Larry
system 1
Classic 150 , 5s3p  Kyocera 135watt , 12s Soneil 2v 540amp lead crystal 24v pack , Outback 3524 inverter
 5s 135w Kyocero , 3s3p 270w Kyocera   Classic 150 ,8s2p  Kyocera 225w to Hawkes Bay Jakiper 48v 20kwh  ,Gobel 16 kwh  lifepo4 Outback VFX 3648  8s2p 380w Rec pv EG4 6000XP

RedSerge

I will have to check the settings but I think that is almost certainly what I am seeing.  Didn't really think of that given that it is still relatively warm here but MyMidnite shows that when I saw the higher voltage, battery temp was 10 degrees C which would put it up just over 30v.  Thanks!