failure mode
FM-05: FM-05 THE BATTERY LOSES CHARGE RAPIDLY WHILE STORED AND DISCONNECTED
The battery loses charge rapidly while stored and disconnected, becoming unusable after a short cool, dry storage interval.
Diagnostic overview
The battery loses charge rapidly while stored and disconnected, becoming unusable after a short cool, dry storage interval.
Likely Root Causes
- The sealed cells have high self-discharge or an internal leakage path
- The pack was not actually full before storage
- Storage was hot, wet, conductive, or near metal
- The battery was left in a tool that drew standby current
- The comparison interval or starting state was not controlled
Quick Checks
- The disconnected pack retains useful charge over a reasonable storage interval, or abnormal self-discharge is isolated to the sealed pack.
Repair Preview
1.
This is a preview of the troubleshooting guidance included in the full repair manual.
Common Fixes
- Designated charger
Related symptoms
A fully charged pack becomes unusable after a short cool, dry storage interval even though it was not left in a tool or charger.
A fully charged pack becomes unusable after a short cool, dry storage interval even 1. Fully charge the pack on a designated charger, remove it from both charger and tool,
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.