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Me again im afraid. Have been looking over my new setup and spotted the following which appears not to be right - best to check with far more clued up people and ask maybe a dumb question than be dumber and not ask at all. Dont want to cook my new kit.

I have 4 x us5000 Pylontechs.
Sparky set them all up and has indicated that the 'battery capacity' is 1600ah.
Have looked on the batterys spec and it says '100ah', which is what i thought they were.
So has the sparky entered the wrong value into my inverter?
Im thinking it should be 400ah (given i have four batteries).

Any thoughts on the other settings applied?

Thanks all

Yes, should be 400.

Thank you for confirming Tinbum, shall go change that right away.

All the voltage settings are wrong. They should be set by the bms though.
I think it's best to change them though as if their were a problem it may default to them. The Max voltage for a Pylontech is 53.2v

resybaby wrote: ↑Wed Sep 20, 2023 10:04 am Thank you for confirming Tinbum, shall go change that right away.

It does look like some of the settings are wrong.

As well as the total capacity I wonder about the voltage settings. Pylontechs are different from other LiFePO4 batterries in that they only have 15 cells, not 16, so the voltages are lower. Mine measure 52.7V when 100% charged.

Victron recommend a max of 53.2 in this document which is worth a read.

It may be that the inverter settings are overruled by what the BMS sends over CANBUS but I would turn them down.

Most inverters have these settings but they are usually totally ignored for setups such as yours where there is a BMS communicating the correct numbers.

Thank you once again guys, have altered the settings now as advised.
Steep learning curve for sure.