failure mode

FM-22 ACTIVE BATTERY HAZARD - SWELLING, LIQUID, SMOKE, SPARKS, MELTING, ODOR, OR DANGEROUS HEAT

The battery exhibits active hazard signs such as swelling, leakage, smoke, sparks, melting, strong odor, or dangerous heat during charging, use, or storage.

Diagnostic overview

The battery exhibits active hazard signs such as swelling, leakage, smoke, sparks, melting, strong odor, or dangerous heat during charging, use, or storage.

Likely Root Causes

  • Cell damage, internal short or thermal runaway
  • Liquid or conductive contamination entered the pack
  • Contacts or internal conductors overheated or arced
  • Crush, puncture, fire exposure or an unsafe charger damaged the battery

Quick Checks

  1. The hazardous battery is no longer used or charged and is transferred only under appropriate emergency, Bosch and local disposal guidance.

Repair Preview

1.

This is a preview of the troubleshooting guidance included in the full repair manual.

Related symptoms

  • The pack is swollen, leaking or wet, smoking, sparking, melting, giving a strong burning or chemical odor, or dangerously hot during charging, use or storage.

    The pack is swollen, leaking or wet, smoking, sparking, 1. Stop use and charging immediately. If safe without touching damaged areas,

Included in the full manual

  • root cause analysis
  • tools needed
  • step-by-step repair procedure
  • diagrams
  • exploded views
  • post-repair checks

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