Battery boost collapse while switching phases
Author: loeffelpanCreated Sep 21, 2026Updated Sep 21, 2026
Labelsinfrastructure
Description
I have a configuration with auto phase switching. When using battery boost charging starts and charge power increases until it reaches phase switching level. For that my wallbox has to stop and restart charging. After that evcc throws a warning and stops completely instead of switching to 3p.
Attached log starts when phase switching timer starts and shows the issue at least three times in a cycle.
Steps to Reproduce
- Select PV Mode and Battery Boost.
- Wait until EVCC determines 16A@1p and counts down for phase switching.
- See that charging stops and restarts with 1p and warnings instead of switching to 3p.
⚠️ RETURN TO EVCC TAB → COPY STEP 2 → PASTE HERE
Version
v0.315.0
System
linux/amd64, CEST +02:00
Source: evcc-io/evcc