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I realise you're thinking of not using more Pylontech, but they do make (at least) 3 models in that range, with different capacities. US2000, 3000, 5000. The current submodel seems to be "C". They interwork in a parallel power, serial control string. Put the newest one as the first on the...

First anomaly noted: 6 3492 4092 10300 Charge Normal Normal Normal 94% 68446 mAH N 7 3471 4092 10300 Charge Normal Normal Normal 92% 66990 mAH N 8 3562 4092 10300...

If it's all Pylontech internals, and it has an RS-232 console: yes. It's Home-Assistant based; a little python shim for talking via a remote TCP-RS232 interface.

It'll depend what rate(s) you get for export. Consider just setting the from-grid charging period as 23:00 - 08:00 (and you might as well put the current limit on that just low enough that an empty battery gets totally filled). Come summer, if you consistently get enough PV to top off AND have...

The units run individually worked fine, so I went back to both. Had two more events - and both self-resolved. I'm thinking it's an overvoltage trip in the BMS, given that all the events have been under a slow charge at near-full SOC (is that estimated by the BMS, or by the Solis?). Logged max...

Stupid problem department: I can't get the datalogger dongle unscrewed from the inverter. The black ring with the grip texture seems to be solid with the grey body. I'm assuming it should rotate separately; is this so? Right-hand thread? Any clever tricks needed? Having put together a...

Are you saying one can set both charge- and discharge-battery concurrently? Or that charging would need to be done at some other time?

Not certain; possibly one of the RHI-(3-6)K-48ES-5G range... But the wire from the CT (down at the grid incomer under the stairs) disappears up into the loft; I've not traced it. It certainly does not go into the second meter they fitted there (sitting on the inverter mains connection).

2x Pylontech US3000C Solis hybrid inverter A couple of days ago the Solis website gave me a status for the battery of "Warning". After a while it went back to "Normal". Yesterday, it went to "Fault" (and emailed me, too), at 11:20 local. SOC was about 93% at the time. I left it alone for a...

Does it say anything separate for the logs of slave batteries in the string?

No joy with the serial number as reported by the solis cloud site, at least. I was about to say I'd not set any password... and then recalled the WEP pasword for the wifi. And, bingo, admin / thatWEPpassword... and the serial # listed there is indeed the same as the one the soliscloud site...

Solis hybrid inverter with a Solarman "datalogger" wifi stick. It's a mk.3 version, with the 3 LEDs. Mostly happily talking to to solis cloud (though it's argued with my wifi a few times over the last year). I'd like to access it directly, to use the Home Assistant "Solarman" integration...

Finally spotted a relevant log entry: log @ Index : 31 Time : 24-02-23 22:10:22 ModID : BMM Code : 5 Info : The voltage of device is too high. Index : 30 Time : 24-02-23 22:10:06 ModID : BMM Code : 2173 Info : The device start charging. Index : 29...

Just had another one - and the temperatures are +14 C so that can't be the issue. It self-corrected after half an hour. Some more hunting found me this: https://diysolarforum.com/threads/pylontech-battery-fault.38451/ and this: https://electricianforum.co.uk/threads/solis-error-2015-bms.56307/...

Unlikely. Sounds like I'll be feeding a network cable up to the loft. I guess the "Volt" column is actually mV; any idea on the "Tempr" (temperature in deg C / 1000, maybe)?[/CODE]

The latter, so fair point.

Lower copper-loss if you charge more gently for longer - but I don't know what the assorted converters on the path will do with their efficiencies.

A grid-current bias register, so I could null out the apparent CT offset. The remote for my house meter, eyeball-averaged, tells me I'm continuously importing 20W from the grid. The CT is, I think, going direct into the inverter (a Solis) so I can't intercept data and apply an offset that way...