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5. With finish of charge, the green light remains lit with the red light going out and the melody sound preset at the
insertion of battery cartridge or buzzer sound (a long beep) comes out to notify completion of charge. (In selected
silent mode, no sounds come out.)
6. Preset melody sound remains stored even when the charger is unplugged.
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 battery cartridge which is new or has not been used for a long period of time, it may not accept a
full charge until after discharging it completely and recharging a couple of times. (Ni-MH battery only)
• If charging light may flash in red color, battery condition is as below and charging may not start.
– Battery cartridge from just-operated tool or battery cartridge that has been left in a location exposed to direct sun-
light for a long time.
– Battery cartridge that has been left for a long time in a location exposed to cold air.
When the battery cartridge is too hot, charging will begin after the cooling fan installed in the charger cools the bat-
tery cartridge. Charging will begin after the battery cartridge temperature reaches the degree at which charging is
possible. 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, 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 automatically searching the optimum charging condition for the
batteries in every situation.
The battery employed in the following conditions repeatedly requires "conditioning charge" to prevent fast wear out. In
that case, yellow light lights up.
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.
Voltage
Number of cells
Ni-MH Battery cartridge
Voltage
Number of cells
Li-ion Battery cartridge
Note:
• It may take twice the above charging time to the maximum because of the optimal charging selected according to the
temperature (10°C (50°F) – 40°C (104°F)), conditions of battery cartridge and maintenance charge.
4
9.6 V
12 V
8
10
—
—
BH9020A
—
—
BH1220/C
—
—
BH9033A
—
—
BH1233/C
14.4 V
18 V
4
5
BL1415
BL1815
—
—
14.4 V
Capacity (Ah)
12
—
1.7
—
2.0
BH1420
2.0
—
2.7
—
3.3
BH1433
3.3
14.4 V
18 V
8
10
—
—
BL1430
BL1830
Charging time (Minutes)
20
20
15
20
30
22
Charging time (Minutes)
15
22
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