Search repair guides

Find repair guides, manuals, symptoms, and error codes across the knowledge base.

Models

Manuals

CRAFTSMAN CMCB204 BATTERY Repair Manual

Symptoms

Stored alone, the pack loses substantial charge without use.
The battery latches normally and works while still, but charging or tool power stops, restarts, or flickers when the pack or receiver is gently moved.
The bit passed initial insertion, but backs out, falls free, or loses drive while the chuck body stays secure.
The motor can be heard, but the front output remains still in both directions with the bit removed.
The drill stops early or gives far less runtime than expected without unusual heat.
The trigger returns normally and power drops, but the anvil repeatedly coasts instead of stopping promptly.
The battery reaches the normal seated position, but the release latch does not retain it and the pack can slide away without pressing the release button.
The chain is hard to pull around the bar, the bar becomes unusually hot, or smoke appears without an electrical odor.
THE BATTERY OR CHARGER WILL NOT BEGIN OR COMPLETE A CHARGE
THE DRILL WILL NOT START WITH A CHARGED KNOWN-GOOD BATTERY
The direction lever will not reach forward, reverse, or center lock, or the selected position does not hold.
THE BATTERY WILL NOT SEAT, LATCH, RELEASE, OR STAY SECURE
Charger green LED stays on
The drive operates normally, but the work light stays dark, flickers, or cuts in and out with trigger use.
Battery repeatedly overheats or protection-stops during light use
Battery loses charge rapidly while stored disconnected
WORKLIGHT COMES ON, BUT THE MOTOR WILL NOT START
At no load the motor starts, but speed has a dead band, surges, cuts out, or ignores trigger pressure.
A straight bit traces a visible circle at no load instead of rotating on a stable centerline.
BATTERY WILL NOT CHARGE

Failure Modes

part