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7.5. Refresh Charging the Nickel Metal Hydride
Battery (JWB2)
A refresh charging is required on a nickel metal hydride battery to eliminate the memory effect.
When the battery is inserted to the charger, if the refresh lamp on the charger flashes, press the
refresh switch to perform a refresh charge cycle. (The refresh lamp flashes after every 20 to 30 charge
cycles.)
(1)
While the refresh lamp (orange) is flashing,
press the refresh switch.
• The refresh lamp (orange) flashes only when
refresh charging is needed.
(2)
The refresh lamp (orange) is flashes, and the
refresh charging starts.
In a refresh charging process, after all remaining electricity has been discharged, the refresh lamp
turns off. The charge lamp lights up and a normal charging process begins. The time it takes from the
start of refresh charging to the completion of normal charging is 3 – 13 hours.
• If the temperature of the battery rises during a refresh charge, the charge lamp (green) may flash
and the charging process may pause.
When the battery reaches an appropriate temperature, the charge lamp will stop flashing and charg-
ing will start automatically.
• Even if you fail to press the refresh switch, you can retry by momentarily removing the battery from
the charger, and then reinserting the battery to see the refresh charging alert.
• If you do not press the refresh switch while the refresh lamp (orange) is flashing, the flashing refresh
lamp will turn off after 1 minute. Then the charge lamp lights up and a normal charging process
begins. In this case, the refresh lamp flashes again the next time you charge the battery.
Tips on charging
• It is recommended that you charge the battery while you are sleeping.
• Since the refresh charging process recharges after discharging all of its remaining elec-
tricity, it will take a long time if you perform it on a battery with a high residual capacity.
It is recommended that you perform a refresh charging on a battery that is drained as
much as possible.
TIP
