[Bug] Inverter Available Battery Charge Energy is inverted

[jasonpstokes]

Integration version

1.1.9

Describe the bug

The Sigen Inverter Available Battery Charge Energy (sensor.sigen_inverter_available_battery_charge_energy) appears to be inverted, showing what has been used not what is available - as the name and entity suggests?

e.g. SOC vs Available is inverse; when the battery is 100% SOC, Available shows zero.

Logs

Let me know if required

Diagnostics file

No response

Checklist

• I searched existing issues and discussions.
• I attached logs and/or diagnostics.
• This is not a support request; it describes a reproducible bug.

[4tiernan]

Hi Jason, I've noticed on my system there is also an entity that shows available discharge entity and thus this is not a bug, rather the entity represents the amount of energy that the battery can accept. Ie kWh till the battery is full.

Hope this helps.

[jasonpstokes]

...the entity represents the amount of energy that the battery can accept. Ie kWh till the battery is full.

I'm not sure if you're saying this is the reason why the entity is like this, or offering an opinion, but this doesn't make sense. Given a battery's purpose is to hold and discharge energy (particularly in a home), the context of available is how much charge the battery currently has, not how much it can accept. One can be calculated from the other but, given it's purpose, it makes more sense to tell us what it has!?

[Frederik-Verwaest]

Hi Jason,

Logical or not, the names of those entities come from the the Sigenergy Modbus protocol definition 30595 and 30597

https://github.com/Si-GCG/sigenergy_projects/blob/main/Modbus.Protocol.EN.-.SIGEN.pdf

Available Battery Charge Energy = what can still be charged up to 100%
Available Battery Discharge Energy = what can be discharged down to 0%