Understanding what happen with the Charge plan to very low SoC

[pedromrg]

Little help here understanding what happened...

Currently we are having full sun days hence SoC only needs to be around 20-25% in the morning in my specific case, so very little charge is needed.
What I have configured:

battery_min_soc:
  - 17

Which matches my inverter configuration.

For the last 2 nights I have noticed PB set's the charge period to start at 23h to around 20% of-course even at very low wattage this is reached very fast... what happens next is that my battery falls 1% , PB kicks in and charges again... etc etc for a big part of the night.

Another point I noticed is why PB sets a demand period at 6AM to then charge back up to 20% at 7h45 ?

predbat_260326.log.txt

Could it be a low power charge mode "bug" when used to charge very low % of SoC ?

The behaviour should be charge to 20% just before 9AM, correct?

Thanks!

[johnwb87]

Have you tried turning on combine charge slots? That might give you behaviour closer to what you expect.

[pedromrg]

@johnwb87 no, haven't tried it yet...

switch.predbat_combine_charge_slots , turned ON, let's see what happens.

Another thing I noticed:

Why do I get this PV values during the night? is this normal ? (this is history view)

[gcoan]

Is it a full moon this week ? 🤣

@johnwb87 that looks like a new bug. I get 0.01's appearing in my plan which look like a rounding error, and check your source Solcast sensor in case its weird, but looks like it needs reporting separately

[johnwb87]

How do you get your PV data into Predbat? Is it generally accurate? That looks like you are very north but also we are basically at the equinox so I think very short nights anywhere at this time of year would be odd.

[johnwb87]

Oh history. Is that reflected in your actual solar generation that you trust? Was it a full moon and clear sky where you live?

[pedromrg]

Yes, if I check sensor history I find this below, PV data from inverter sensor.

0w all night

I am very much south, Madeira Island