OPERATING INSTRUCTIONS
Installing or removing battery cartridge (Fig. 1)
• Always switch off the tool before insertion or removal of the battery cartridge.
• To remove the battery cartridge, withdraw it from the tool while sliding the button on the cartridge.
• To insert the battery cartridge, align the tongue on the battery cartridge with the groove in the housing and slip it into place.
Always insert it all the way until it locks in place with a little click. If you can see the red part on the upper side of the button,
it is not locked completely. Insert it fully until the red part cannot be seen. If not, it may accidentally fall out of the tool, causing
injury to you or someone around you.
• Do not use force when inserting the battery cartridge. If the cartridge does not slide in easily, it is not being inserted correctly.
Charging (Fig. 2)
1.
Plug the battery charger into the proper A/C voltage source. Two charging lights will flash in green color repeatedly.
2.
Insert the battery cartridge into charger until it stops adjusting to the guide of charger. Terminal cover of charger can be
opened with inserting and closed with pulling out the battery cartridge.
3.
When the battery cartridge is inserted, the charging light color will change from green to red and charging will begin. The
charging light will keep lighting up lit steadily during charging.
One red charging light indicates charged condition in 0 – 80% and two red ones indicates 80 – 100%.
4.
With finish of charge, the charging lights will change from two red ones to two green ones.
5.
If you leave the battery cartridge in the charger after the charging cycle is complete, the charger will switch into its ‘‘trickle
charge (maintenance charge)’’ mode which will last approximately 24 hours.
6.
After charging, unplug the charger from the power source.
Refer to the table below for the charging time.
Battery type
Capacity (mAh)
Number of cells
Charging time
BH1420
2,000
12
Approx. 30 min.
BH1433
3,300
12
Approx. 50 min.
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 battery cartridge which has been left in a location exposed to direct
sunlight 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 is cooled by the cooling fan installed in the charger. When the temperature on battery is more than approx.
70°C, two charging lights may flash in red color, and when approx. 50°C – 70°C, one charging light in red color.
• 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.
Cooling system
• This charger is equipped with cooling fan for heated battery
in order to enable the battery to prove its own performance.
Sound of cooling air comes out during cooling, which means
no trouble on the charger.
• Yellow light will flash for warning in the following cases.
– Trouble on cooling fan
– Incomplete cool down of battery, such as, being clogged
with dust
The battery can be charged in spite of the yellow warning
light. But the charging time will be longer than usual in this
case.
Check the sound of cooling fan, vent on the charger and
battery, which can be sometime clogged with dust.
• The cooling system is in order although no sound of cooling
fan comes out, if the yellow warning light will not flash.
• 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 automati-
cally searching the optimum charging condition for the batter-
ies 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.
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 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.
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