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Update BYD-MODBUS.cpp to report max 44.16kWh capacity to the inverter - #1

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pmajor021 merged 6 commits into
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byd_modbus_44k
Feb 26, 2026
Merged

pmajor021 merged 6 commits into
mainfrom
byd_modbus_44k

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@pmajor021

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The update does not allow BE to report a maximum and remaining capacity greater than 44.16 kWh to the inverter, which equals with the 2x22.08 BYD HVM batteries.

What

This PR implements a lower reported capacity value.

Why

Max allowed 2x22.08 BYD HVM batteries by design on Fronius Gen24 inverters

How

Changing the previous 60kWh cap to 44.16kWh.

The update does not allow BE to report a maximum and remaining capacity greater than 44.16 kWh to the inverter, which equals with the 2x22.08 BYD HVM batteries.
@pmajor021

pmajor021 commented Jan 17, 2026 •

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We might want to think about updating the system to include battery 3's remaining capacity in the total remaining capacity reported to the inverter.

pmajor021 and others added 5 commits January 18, 2026 11:28
update to 11kWh max capacity
update max design voltage to 254.9V and capacity to 57.96kWh
update max design voltage to 254.9V and capacity to 57.96kWh
the maximum voltage 450.0V and total capacity 57.96kWh
@pmajor021
pmajor021 merged commit 97a3025 into main Feb 26, 2026
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