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• Always keep clean the vent on charger and battery for
cooling.
• The products should be sent to repair or maintenance, if
the yellow warning light will frequently flash.
Conditioning charge
Conditioning charge can extend the life of battery by auto-
matically searching the optimum charging condition for the
batteries in every situations.
The battery employed in the following conditions repeatedly,
will be worn out shortly, and yellow warning light may flash.
1. Recharge of battery with its high temperature
2. Recharge of battery with its low temperature
3. Recharge of full charged battery
4. Over-discharge of battery (continue to discharge battery
in spite of down of power.)
The charging time of such battery is longer than usual.
Trickle charge (Maintenance charge)
If you leave the battery cartridge in the charger to prevent
spontaneous discharging after full charge, the charger will
switch into its “trickle charge (maintenance charge)” mode
and keep the battery cartridge fresh and fully charged.
Tips for maintaining maximum battery life
1. Charge the battery cartridge before completely dis-
charged.
Always stop tool operation and charge the battery car-
tridge when you notice less tool power.
2. Never recharge a fully charged battery cartridge.
Overcharging shortens the battery service life.
3. Charge the battery cartridge with room temperature at
10°C - 40°C (50°F - 104°F).
Let a hot battery cartridge cool down before charging it.
4. Charge the Nickel Metal Hydride battery cartridge when
you do not use it for more than six months.
Refresh charging
Refreshing adapter (optional accessory) can refresh an inac-
tive battery cartridge.
Refresh charging should be done once a week.
When you charge a new battery cartridge or a battery car-
tridge that has not been used for a long time, it may not