[. . . ] 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 short the battery cartridge: (1) Do not touch the terminals with any conductive material. A battery short can cause a large current flow, overheating, possible burns and even a breakdown. [. . . ] Always keep the vents on charger and battery clean and clear of any obstructions for cooling. The products should be sent for repair or maintenance to a Makita service center, if the yellow warning light keeps flashing. Conditioning charge can extend the life of battery by automatically searching the optimum charging condition for the batteries in every situation. The battery treated in the following conditions repeatedly, will wear out quicker, and yellow warning light may flash. Recharge under broken cooling system The charging time of such battery is longer than usual. 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. 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. 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 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. charging will begin after the battery cartridge is cooled by the cooling fan installed in the charger (DC24SA only). 70°C, two charging lights may flash in red color, and when approx. 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. Any of the following conditions indicates damage to the charger and/or battery cartridge. 1) The charging light does not flash (green) when the battery charger is plugged into a power source. 2) The charging light does not light up or flash (red) when the battery is inserted in the charger port. 3) Charging is not completed at even more than two hours after red light comes ON at start of charging. Install the side grip so that the teeth on the grip fit in between the protrusions on the tool barrel. Important: Always be sure that the tool is switched off and the battery cartridge is removed before installing or removing the bit. [. . . ] Drilling in metal To prevent the bit from slipping when starting a hole, make an indentation with a centerpunch and hammer at the point to be drilled. To maintain product safety and reliability, repairs, maintenance or adjustment should be carried out by a Makita Authorized Service Center. Stäng först av verktiget och ändra sedan varvtalet (verktigshastigheten) genom att skjuta varvtalsomkopplaren till läget "II" för högt varvtal eller till läget "I" för lågt varvtal. CAUTION: These accessories or attachments are recommended for use with your Makita tool specified in this manual. [. . . ]