Maintenance - Makita DC24SA Instruction Manual

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.)
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 discharged.
Always stop tool operation and charge the battery cartridge 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.
CAUTION:
• The high capacity battery charger Model DC24SA is for charging Makita-battery cartridge. Never use it for other pur-
poses 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 bat-
tery cartridge fully after discharging it completely and recharging a couple of times. (Ni-MH battery only)
• 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 temper-
ature 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.

MAINTENANCE

CAUTION:
Always be sure that the charger is unplugged and the battery cartridge is removed before attempting to perform
inspection or maintenance.
To maintain product SAFETY and RELIABILITY, repairs, maintenance or adjustment should be performed by a Makita
Authorized or Factory Service Centers, always using Makita replacement parts.
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