Makita 4390D instruction manual Tips for maintaining maximum battery life

•If you try to charge a battery cartridge from a just operated tool, sometimes the charging light will not come on. If this occurs, let the cartridge cool off for a while. Then re-insert it and try to charge it once more.

•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.

•When you charge a new battery cartridge or a battery cartridge which has not been used for a long period, sometimes the charging light will go out soon. If this occurs, remove the battery cartridge and re-insert it. If the charging light goes out within one minute even after repeating this procedure a couple of times, the battery cartridge is dead. Replace it with a new one.

•If you wish to charge two battery cartridges, allow 15 minutes between charging on the charger.

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 before charging it.

002490 Switch action

CAUTION:

•Before inserting the battery cartridge into the tool,

			always check to see that the switch trigger actuates
		1	properly and returns to the “OFF” position when
			released.
	2
			To prevent the switch trigger from being accidentally pulled, a
1. Lock-off lever
2. Switch trigger			lock-off lever is provided.
			To start the tool, slide the lock-off lever in the direction of the
			arrow and pull the switch trigger. Release the switch trigger
			to stop.

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