Li-Ion Battery Pack - Panasonic EY4640 Operating Instructions Manual

• Cool down the charger when charging
more than two battery packs consecu-
tively.
• During charging, the charger may
become slightly warm. This is normal.
Do NOT charge the battery for a long
period.
To prevent the risk of fire or damage
to the battery charger.
• Do not use power source from an
engine generator.
• Do not cover vent holes on the
charger and the battery pack.
• Unplug the charger when not in use.

Li-ion Battery Pack

NOTE:
Your battery pack is not fully
charged at the time of purchase.
Be sure to charge the battery be-
fore use.
Battery charger
1. Plug the charger into the AC outlet.
2. Insert the battery pack firmly into
the charger.
1. Line up the alignment marks and
place the battery onto the dock on
the charger.
2. Slide forward in the direction of the
arrow.
Alignment
marks
3. During charging, the charging lamp
will be lit.
When charging is completed, an
internal electronic switch will auto-
matically be triggered to prevent
overcharging.
• Charging will not start if the battery
pack is warm (for example, imme-
diately after heavy-duty operation).
The orange standby lamp will be
flashing until the battery cools down.
Charging will then begin automati-
cally.
4. The charge lamp (green) will flash
slowly once the battery is approx-
imately 80% charged.
5. When charging is completed, the
charging lamp in green color will turn
off.
6. If the temperature of the battery pack
is 0°C or less, charging takes longer
to fully charge the battery pack than
the standard charging time.
Even when the battery is fully charged,
it will have approximately 50% of the
power of a fully charged battery at
normal operating temperature.
7. Consult an authorized dealer if the
charging lamp (green) does not
turn off.
8. If a fully charged battery pack is
inserted into the charger again, the
charging lamp lights up. After sev-
eral minutes, the charging lamp in
green color will turn off.
9. Remove the battery pack while
thebattery pack release button is
held up.
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Battery pack
release button