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• 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, 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.
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.
To maintain product SAFETY and RELIABILITY, repairs, any other maintenance or adjustment should be performed by
a Makita Authorized Service Centers, always using Makita replacement parts.
Voltage
9.6 V
Number
8
of cells
—
BH9020A
—
Ni-MH
Battery
—
cartridge
—
BH9033A
—
Voltage
14.4 V
Number
4
of cells
BL1415
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.
12 V
14.4 V
10
12
—
—
BH1220/C
BH1420
—
—
—
BH1427
—
—
BH1233/C
BH1433
—
—
18 V
14.4 V
5
8
—
—
BL1815
—
—
BL1430/A
—
—
18 V
24 V
—
20
—
B2417
—
—
—
BH2420
—
—
—
B2430
—
—
—
BH2433
18 V
—
10
—
—
—
—
—
—
—
BL1830
—
Charging time
Capacity (Ah)
(Minutes)
1.7
30
20
2.0
30
2.7
25
3.0
50
30
3.3
50
Charging time
Capacity (Ah)
(Minutes)
20
1.5
20
30
3.0
35
3
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