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Read Pylontech battery data from a raspberry?

WoodsieLord

New Member
Joined
Oct 4, 2019
Messages
145
Location
Buenos Aires, Argentina (230V monophasic, 50Hz)
Hello!, I have two Pylontechs UP2500 ("24V" 100Ah) and I am currently calculating the SOC with an external shunt and a raspberry pi.
My SOC solution is inaccurate so it syncs to 100% whenever the system is full. Yet if a whole week passes by and the battery oscillated (ie between 20% and 75%) not reaching full capacity, the SOC may drift more than 15% after those few days.

My inverter is not compatible with the pylontech bus (nor does it feature ANY kind of connection to any battery). What I'm wondering is if I could connect my RPI to the batteries and read the SOC (and some other useful data, maybe?)

This is from the manual:
1661513093362.png
1661513132210.png

If get this right, I should be aiming at the RS485 interface. Would you recommend me getting an RS485 to USB adapter and see what I can get ? I have a feeling that I won't be able to get my hands on a proper command list.
So... what do you think ?
Thanks for any input and regards!
 
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