Makita 6933FD Instruction Manual page 9

NOTE:
• The battery charger is for charging Makita battery
cartridge. Never use it for other purposes or for other
manufacturer's batteries.
• When you charge a new battery cartridge or a battery
cartridge which has not been used for a long period of
time, it may not accept a full charge. This is a normal
condition and does not indicate a problem. You can
recharge the battery cartridge fully after discharging it
completely and recharging a couple of times.
• 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 battery charger.
• If the charging light flashes alternately in green and red
color, charging 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 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.
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