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Models

Symptoms

The full-indicating pack runs a task far less than a healthy pack.
The drill stops early or gives far less runtime than expected without unusual heat.
The cap will not close, the primer is split or stuck, or the oil-level indicator is cracked, clouded, or leaking.
The motor can be heard, but the front output remains still in both directions with the bit removed.
The tool works normally, but a fully charged pack empties much sooner on the same light task.
The trigger returns normally and power drops, but the anvil repeatedly coasts instead of stopping promptly.
THE BATTERY WILL NOT SEAT, LATCH, RELEASE, OR STAY SECURE
El paquete se sobrecalienta o activa repetidamente el apagado térmico durante una tarea ligera verificada después de comenzar frío.
El paquete no se desliza completamente, no engancha de forma segura ni se libera normalmente.
The charger shows charging or hot/cold delay, but the pack never reaches its normal charged indication.
The direction lever will not reach forward, reverse, or center lock, or the selected position does not hold.
After a normal full charge, the battery loses a large amount of indicated charge or usable low-load runtime while stored by itself in a cool, dry place.
The external structure is visibly cracked, loose, crushed, melted, or missing material even if the saw still runs.
After a normal full charge, the battery delivers usable power but substantially less work than a comparable known-good pack in the same tool, task and conditions.
After trigger release, the bit or square drive coasts noticeably longer than normal before stopping.
A straight bit or socket visibly orbits, shakes, or runs off-center during a brief no-load test.
WORKLIGHT COMES ON, BUT THE MOTOR WILL NOT START
360度除尘口卡住或松动，或兼容的软管/接头无法保持连接。
A straight bit traces a visible circle at no load instead of rotating on a stable centerline.
BATTERY WILL NOT CHARGE

Failure Modes

part