Lawn forecastGuidesError codesCommunity

MowerWatch › Automower error codes › Error 79

Language: English · Deutsch

Husqvarna Automower error 79

Invalid battery combination

Fault / warning

Also shown as E79 · fault code 79 · message 79

The mower has detected a battery it doesn't recognise as a valid match for its configuration.

Common causes

How to fix it

  1. Fit a genuine battery specified for your exact model.
  2. Check the battery connector is fully seated.
  3. If a correct, genuine battery still triggers it, have the battery and wiring checked.
Was this page helpful?
Tired of decoding fault numbers by hand?
MowerWatch reads your Automower's own fault log and history and explains what stopped it — and the likely fix — in plain English, automatically, every time. Start a free 3-day trial or open the live demo first (no login).

Mower broken right now? The trial is enough to find the cause. Need longer to see the repair through? A one-off $20 30-day pass costs less than a seventh of a $149 dealer visit, and it never renews.

Related codes — Battery

Error 11
Low batteryError 12
Empty batteryError 58
Temporary battery problemError 59
Temporary battery problemError 60
Temporary battery problemError 61
Temporary battery problemError 62
Temporary battery problemError 63
Temporary battery problemError 64
Temporary battery problem

While you're here: our free grass-growth forecast tells you whether your lawn actually needs cutting this week — no signup.

MowerWatch is an independent product, not affiliated with, endorsed by, or sponsored by Husqvarna AB. Automower® is a registered trademark of Husqvarna AB, used only to describe compatibility. Codes and guidance are provided in good faith — always follow your model's operator manual and consult a dealer for repairs. · All error codes · Guides