Makita BTD042 Instruction Manual page 6

• Any of the following conditions indicates damage to the charger and/or battery cartridge. Ask your Makita Authorized
or Factory Service Center to check them.
1) The charging light does not flash (green) when the battery charger is plugged into a power source.
2) The charging light does not light up or flash (red) when the battery is inserted in the charger port.
3) Charging is not completed at even more than two hours after red light comes ON at start of charging.
Conditioning charge
Conditioning charge can extend the life of battery by automatically searching the optimum charging condition for the
batteries in every situation.
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.)
5. Recharge under broken cooling system
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. Never recharge a fully charged battery cartridge. Overcharging shortens the battery service life.
2. Charge the battery cartridge with room temperature at 10°C – 40°C (50°F – 104°F).
3. Let a hot battery cartridge cool down by inserting it into the charger.
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 inactive battery cartridge.
• Refresh charging should be done once a week.
• When you charge a new battery cartridge or a battery cartridge that has not been used for a long time, it may not
accept a full charge. In this case, refresh charging must be done. The battery cartridge may decrease the tool perfor-
mance, because the chemical substance of the battery cartridge is inactive.
Checking the remaining battery capacity (Fig. 3)
When charging
When the charging begins, the first (far left) indicator lamp begins to flicker. Then, as charging proceeds, the other
lamps light, one after the other, to indicate the battery capacity.
When using
When the tool is switched on, the lamps will light to indicate the remaining battery capacity. When the tool is switched
off, the light goes out automatically.
If the battery has not been used for a long time, or is needed refresh charging, the (C) lamp begins to flicker. Use Mak-
ita refreshing adapter to refresh the battery.
Installing or removing bit (Fig. 4)
CAUTION:
Always be sure that the tool is switched off and the bat-
tery cartridge is removed before installing or removing
the bit.
Use only the driver bit or socket bit shown in the figure
below.
Do not use any other driver bit or socket bit.
To install the bit, pull the sleeve in the direction of the
arrow and insert the bit into the sleeve as far as it will go.
Then release the sleeve to secure the bit.
To remove the bit, pull the sleeve in the direction of the
arrow and pull the bit out firmly.
6
NOTE:
If the bit is not inserted deep enough into the sleeve, the
sleeve will not return to its original position and the bit will
not be secured. In this case, try re-inserting the bit
according to the instructions above.
Switch action (Fig. 5)
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.