STIHL RMI 632 P: M0705 — Battery cells unbalanced

What this fault means

Battery cell balance is outside the expected range.

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

Step-by-step checks

1. Stop repeated reset attempts.
2. Allow the mower to charge only with its correct STIHL system if it still accepts charge.
3. Do not open or attempt cell-level repair of the sealed battery.
4. Record battery age, runtime change and any charging message.
5. Arrange authorised dealer battery diagnosis/replacement.

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?

Confirmed repair outcomes improve MowerFixAI for the next owner and help separate common symptoms from real component failures.