STIHL RMI 632: M0709 — Internal battery fault

What this fault means

The battery reports an internal fault requiring service diagnosis.

Safety: Stop the mower and follow the manufacturer safety instructions before physical inspection.

Step-by-step checks

1. Power the mower down safely.
2. Do not open, bypass or rebuild the battery pack.
3. Inspect only external battery/charging connections accessible under the manual.
4. Record whether the fault occurs on or off the dock.
5. Arrange authorised STIHL service.

Evidence source: Manufacturer/support reference

Evidence checked 2026-08-25. Diagnostic procedures are labelled separately from manufacturer-exact error instructions.

Did one of these checks actually fix the mower?

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