Support

Questions or bugs: open an issue on GitHub.

The app shows NO LINK

1. Join the same Wi‑Fi as the battery.
2. In the Marstek app, turn on Local API for the battery.
3. Check that the IP address in Battery ETA matches the battery.

The app or a widget shows ALLOW LAN

Open Settings › Privacy & Security › Local Network and turn on Battery ETA. Tapping ALLOW LAN in the app opens Settings for you.

Widgets show old numbers

iOS refreshes widgets about every 15 minutes. Open the app to read the battery now.

Supported batteries

Marstek Venus E 3.0 with Local API turned on. Battery ETA is an independent app, not made by, endorsed by or affiliated with Marstek.