Makita BHP460 Instruction Manual page 9

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 not trouble on the charger.
-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
cooing 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 fre-
*Yellow light will flash for warning in the following cases.
quently flash.
Conditioning charge
Conditioning charge can extend the life of battew 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 chargel
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.
4. Charge the Nickel Metal Hydride battery cartridge when you do not use it for more than
six months.
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