User manual MAKITA 6990D

[. . . ] Do not charge battery cartridge when temperature is BELOW 10°C (50°F) or ABOVE 40°C (104°F). Do not attempt to use a step-up transformer, an engine generator or DC power receptacle. Do not allow anything to cover or clog the charger vents. Always cover the battery terminals with the battery cover when the battery cartridge is not used. [. . . ] Insert the battery cartridge so that the plus and minus terminals on the battery cartridge are on the same sides as their respective markings on the battery charger. insert the cartridge fully into the port so that it rests on the charger port floor. When the battery cartridge is inserted, the charging light color will change from green to red and charging will begin. The charging light will remain lit steadily during charging. When the charging light color changes from red to green, the charging cycle is complete. If you leave the battery cartridge in the charger after the charging cycle is complete, the charger will switch into its ``trickle charge (maintenance charge)'' mode which will last approximately 24 hours. After charging, unplug the charger from the power source. Never use it for other purposes 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 battery cartridge fully after discharging it completely and recharging a couple of times. ⷠIf you charge a battery cartridge from a just-operated tool or a battery cartridge which has been left in a location exposed to direct sunlight or heat for a long time, the charging light may flash in red color. charging will begin after the battery cartridge cools. The battery cartridge will cool faster if you remove the battery cartridge from the battery charger. ⷠIf the charging light flashes alternately in green and red color, a problem exists and 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. 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. Always stop tool operation and charge the battery cartridge when you notice less tool power. Charge the Nickel Metal Hydride battery cartridge when you do not use it for more than six months. Important: Always be sure that the tool is switched off and the battery cartridge is removed before installing or removing the bit. Use only the driver bit or socket bit shown in the figure below. Do not use any other driver bit or socket bit. [. . . ] CAUTION: Always be sure that the tool is switched off and the battery cartridge is removed before carrying out any work on the tool. Replace carbon brushes when they are worn down to the limit mark. Both identical carbon brushes should be replaced at the same time. To maintain product safety and reliability, repairs, maintenance or adjustment should be carried out by a Makita Authorized Service Center. [. . . ]