ChargeRate Change coupled with SOC of Battery?!

[hf81-ble]

Summary

After starting evcc (restart → evcc starts), charging is enabled immediately, but the charge rate is not recalculated.
In winter, with no PV production and stable home battery SOC, charge control remains inactive until the battery SOC changes.

This also affects Fast Charge and manual charge rate changes.

Environment

Season: Winter

PV: 0 W

Charging: 100% grid

Home battery present (SOC stable)

EV already plugged in

evcc restarted (evcc starts)

Scenario 1: evcc start
Steps to reproduce

• EV is plugged in

• Start / restart evcc

Observed behavior

• Charging starts immediately (remote start)

• Charge rate stays unchanged
  (last value before restart or wallbox default)

• No recalculation of charge rate

• Charge rate updates only after home battery SOC changes

Expected behavior

• On evcc start, charge rate should:

• be recalculated immediately
  or

• be set to a defined safe default

• Especially in winter / grid-only operation:

• user must be able to manually set charge rate

• independent of home battery SOC

Scenario 2: Switching to Fast Charge
Steps to reproduce

• EV is charging

• Switch mode to Fast Charge

(Optional) change wallbox current manually

Observed behavior

• Mode change is shown in UI

• Charge rate does not change

• Manual wallbox changes are ignored

• Charge rate updates only after home battery SOC changes

Expected behavior

Fast Charge should:

• immediately apply maximum allowed charge rate

• react to manual charge rate changes

• not depend on battery SOC updates

Analysis

Charge rate control appears to be strongly coupled to home battery SOC updates.

No control loop is triggered on:

• evcc start

• charging mode change

• manual wallbox current change

In winter, with no PV and stable battery SOC, this leads to long periods without charge regulation.

Impact

Unexpected charge rate after evcc start

Fast Charge not behaving as expected

Manual control not possible when urgently charging in winter

Conclusion

This is a reproducible startup behavior issue in evcc, especially relevant for winter and grid-only charging scenarios.

Feedback, confirmation, or recommended workarounds are welcome.

[VolkerK62]

No hardware details, no config, no log file .... what kind of help do you expect?