Craftsman 320.66810 Operator's Manual page 18

CHARGING A HOT BATTERY PACK
If the battery pack is above normal temperature range, the red LED will
illuminate and the green LED will be off. When the battery pack cools down to
approximately 104°F (40°C), the charger will automatically begin charging.
CHARGING A COLD BATTERY PACK
If the battery pack is below the normal temperature range, the red LED will
illuminate and the green LED will be off. When the battery warms to a temperature
of more than 32°F (0°C), the charger will automatically begin charging.
DEFECTIVE BATTERY
If the charger detects a problem, the red LED will begin flashing and the green
LED will be off.
1. If registering as defective, remove and reinsert the battery pack in the
charger. If the LED status reads "defective" a second time, try charging a
different battery pack.
2. If a different battery pack charges normally, dispose of the defective battery
pack (see Maintenance section).
3. If a different battery pack also indicates "defective," the charger may be defective.
BATTERY CHARGING
If the battery pack is within normal temperature range, the green LED will begin
flashing and the red LED will be off. The battery pack will reach a full charge in
50 minutes. The POWER BAR LED lights will cycle right to left during charging.
This is part of the normal charging operation. The POWER BAR LED lights will
not be displayed when the POWER BAR button is pressed while the battery
pack is on the charger.
BATTERY FULL
If the battery pack is within normal temperature range, the green LED will be lit
and the red LED will be off. The battery pack is fully charged and ready to use.
The battery pack will fully charge, but will not overcharge, if left on the charger.
The POWER BAR LED lights will not be displayed when the POWER BAR button
is pressed while the battery pack is on the charger.
NOTE: Charger may warm with several continuous charge cycles. This is part of
the normal operation of the charge. Charge in a well ventilated area.
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