Makita 6503D Instruction Manual page 9

If you charge a battery cartridge from a just-operated tool or
a
battery cartridge which has
been left in a location exposed to direct sunlight or heat for
a
long time, the charging light
may flash in red color. If this occurs, wait for a while. Charging will begin after the battery
cartridge cools. The battery cartridge
will
cool faster if you remove the battery cartridge
from the high capacity battery charger.
If
the charging light flashes alternately in green and red color,
a
problem exists and charg-
ing is not possible. The terminals on the charger or battery cartridge are clogged with
dust or the battery cartridge is worn out or damaged.
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 discharged.
Always stop tool operation and charge the battery cartridge 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.
Switch action
CAUTION:
Before inserting the battery cartridge into the tool, always check to see that the switch
trigger actuates properly and returns to the "OFF" position when released.
To start the tool, simply pull the trigger. Tool speed is increased by increasing pressure on
the trigger. Release the trigger to stop
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