CraigL

(Updated info further down in the post)
I create a very simple Python script to interrogate the Pace BMS as used in some popular lithium battery brands. I've also packed this as a Home Assistant add-on, but can just as well be used as either a standalone script / within a docker container.
It reports the voltage of cells, temperatures, the pack's current, voltage, SOC, SOH, and a few other metrics.
Use at own risk. 
Either a serial link to the RS232 port or via IP (using some port server over TCP) will work.
Repository: https://github.com/Tertiush/bmspace
The script serves by needs atm, so any further developments can be done by the community.

UPDATE:
I've rewritten most of this script using the official PACE RS232 Protocol definition. The script now supports multiple packs!
I've only implemented informational messages / retrieving data, no commands.
Use at own risk!
Many new fields are now retrieved such as warnings, balancing data, status indications, etc.

I purchased from them as well , no issues they actually part of Pegasus Systems. 
 

The amount of websites offering solar products overwhelmed me when I first looked into a system. Just the thought of transferring large amounts of cash to some online shop was putting me off.  Until I found this forum, where fellow members opinions made the decision easier.
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The amount of websites offering solar products overwhelmed me when I first looked into a system. Just the thought of transferring large amounts of cash to some online shop was putting me off.  Until I found this forum, where fellow members opinions made the decision easier.
I finally decided to rather spend a few extra bucks and purchased from a well know company that was recommended on this forum - their name is on your browser URL bar 🙂