The cool dry battery shell appears closed, but a new loose rattle, clunk or shifting movement is heard inside after a drop or impact, with no swelling, liquid, smoke, odor or heat.

The cool dry battery shell appears closed, but a new loose 1. Remove the pack from every device and place it on a clear nonflammable surface.

• FM-21: Fm 6 1 2

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

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