failure mode
FM-16: FM-16 BATTERY REPEATEDLY OVERHEATS OR PROTECTION-STOPS DURING LIGHT USE
The battery repeatedly overheats or triggers protection shutdowns during light intermittent use at room temperature.
Diagnostic overview
The battery repeatedly overheats or triggers protection shutdowns during light intermittent use at room temperature.
Likely Root Causes
- Cooling channels are blocked
- High internal resistance creates excess heat
- Temperature sensing or protection electronics are faulty
- The tool or accessory is creating hidden excess load
Quick Checks
- The pack remains within normal temperature and completes the light test, or repeatable battery-side thermal failure is proven.
Repair Preview
1.
This is a preview of the troubleshooting guidance included in the full repair manual.
Related symptoms
Battery repeatedly overheats or protection-stops during light use
FM-16 BATTERY REPEATEDLY OVERHEATS OR FM-22 ACTIVE BATTERY HAZARD - SWELLING, LIQUID,
At room temperature in a proven compatible tool, the pack becomes unusually hot or repeatedly protection-stops during a light intermittent task that a known-good battery completes normally.
At room temperature in a proven compatible tool, the pack 1. Stop the light task, remove the battery, and place it on a clear nonflammable
Included in the full manual
- root cause analysis
- tools needed
- step-by-step repair procedure
- diagrams
- exploded views
- post-repair checks
Public pages show a preview only. Purchase the full manual to download complete repair steps, diagrams, and verification procedures.