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I wonder if this might be SoC calibration.

How often do you typically cycle through the entire SoC range (i.e., 10% to 100% and back again?)

Does the battery SoC trace look normal? (No vertical jumps or drops?)

What do the 'total' figures look like? (So rather than the charging and discharging ...

For me it took about a week.

In terms of predbat, make sure that the battery is configured correctly in the apps.yaml and in the config. The first time I let predbat control things, it did pull the SoC too low, because the old fox.yaml template had some things set up oddly. Predbat was originally written for GivEnergy systems ...

I set up an automation to charge up to 100% weekly (if it did not hit 100% naturally within that time), and down to 10% once a month (again, if it did not reach 10% by itself in that time). That helps keep the battery system happy :-)

You might notice that charging seems to pause at 96%. This is ...

Charge speed is quite restricted at the very high end of the SoC range. This is to protect the battery, since charging at high speed at this point in the battery range could cause battery degradation.

There's a post that discusses it here: viewtopic.php?p=4554#p4554

With me, it was about 2 weeks for the MCS and so forth, and another week for the export MPAN. The installers applied for the export MPAN so I didn't need to wait for E-on to do it (otherwise it could have been weeks later).

With Octopus, they will only pay you for export from the time that the ...

If you have home assistant, in theory I think this could be done by controlling a relay to connect the two lines on the CCA which trigger the shutdown (the ones which would usually be wired into the 'big red switch').

The first thing I did when I set up my CCA was ask Tigo to disable rapid shutdown ...

I believe I have a V2 battery (EC4300-H4, serial number starts 60KS432..., plus KH7, the box shows V2.0 and A), and it shows the same information for me (SOH 100% and Remaining Power Capacity 72Ah, everything else blank).

Interestingly, the 'Expected life' tab was mostly showing blank until a few ...

On Flux, we buy for 14p between 02:00 and 05:00 but we can sell power back which you can’t do on Go.



I believe that you can sell power back on Go for 15p/kWh, if you use the Octopus Fixed Export tariff. I'm not actually an Octopus customer so not sure what is involved with getting the Fixed ...

Installer came back instantly, telling me it's not their job and I have to call Fox. You've got to laugh at their continued insistence they have no responsibility for any part of the process!

Anyone had any luck going to Fox through the app to get this done? If I raise a ticket have I got any ...

Here's a few starting points:


https://github.com/nathanmarlor/foxess_modbus

I used this RS485 adaptor - https://github.com/nathanmarlor/foxess_modbus/wiki/Waveshare-RS485-to-ETH-%28B%29

You'll need to wire it in: https://github.com/nathanmarlor/foxess_modbus/wiki/Modbus-Wiring-Guide

One tip ...

Firstly you need to make sure you have recent firmware which supports the setting, then then you need to ask for the meter compensation setting to be changed to -30W

This is what I asked:

I would like to make use of the new KH Meter Compensation setting, to bias the grid pressure to export ...

EPS box (ATS whole home gateway) coming to the UK for single-phase inverters, tentatively end of June

Oh I have no idea, I prefer to setup my own automation in HA over PredBat


Just to make life difficult for myself I do it both ways :-)

Started off with my own scheduler based on target SoCs throughout the day but running predbat in the background in read-only mode (so that it only monitors and ...

Have you tried the number.min_soc_on_grid? rather than number.min_soc? min_soc_on_grid works fine on the KH as a way to control the minimum charge limit (I'm using it for the 'freeze charge' and 'hold charge' modes on predbat).

I'd suggest - at least once a week, make sure you hit 100%. At least once a month, make sure you hit 10% (i.e., down to the reserve).

I set up an automation to do it for me. Many people will just hit these limits routinely as a result of their charging / discharging schedules.

It was about 5 days I think, but it is going to vary depending on how many tickets that they have in the queue, and whether that is all working days or includes a weekend / holiday / etc.


Note that the peak rate consumption won't get to exactly zero, unless you set it to some absurd level like ...

You need to check it via a separate CT clamp or (ideally) from the smart meter itself. The inverter's CT will appear to be unchanged, at +10W import or whatever, but the readings will be biased by the compensation figure in the direction of forcing export. So for example, the inverter's CT is ...

Somewhere buried away in the system the clocks have not moved forward.


I think (not 100% sure) that the mode scheduler is driven from the cloud, not locally on the inverter. So if the time on the Fox cloud hasn't been adjusted, then it'll be off, regardless of what the inverter's time is set ...

Generally people just use the default range 10% - 100% (since it is 90% DoD). The warranty will cover you for 6000 full 10%-100% cycles (EC/EQ) for 12 years, or 4000 cycles (EP) for 10 years with the extended warranty, and you should have at least 80% capacity remaining after doing that.

If you are ...

Yeah. A pity that particular paper did not model 20-80 charging as one of the scenarios, but some other papers do cover it. High cell temperatures, high SoC ranges, high charge rates, etc all have an effect over the years.

Do you have more details on setting up Home Assistant to work with the 485 messages?



* This is my system, installed in January, including the RS485/MODBUS adaptor, home assistant, and the plug: https://imgur.com/a/18OpA4d
* This is the interface software ('integration') which you install into ...

Presumably the agreement with the DNO is that export cannot exceed 100kW?

If the export limit is an issue, perhaps increase battery capacity & ensure that there is enough space in the morning, so that any overflow can be stored rather than clipped?

Here's what the meter compensation setting will look like - inverter's sensor.grid_ct figure compared to a Shelly CT. -30 set at 15:47:50. The inverter CT still registers +10W import, but the system is actually now exporting a small amount rather than importing a small amount. Of course it is the ...

Here's the result of my calibration automation - I got brave and set it to 100%, and it reached it OK. This is with top calibration interval at 7 days, bottom calibration interval 28 days, charge current 2.7A via number.force_charge_power (600W on an EC4300-H4) >= 97% SoC. I guess the previous time ...