7 ENGLISH3. Charge the battery cartridge with room tempera-ture at 10 °C - 40 °C (50 °F - 104 °F). Let a hotbattery cartridge cool down before charging it.4. When not using the battery cartridge, removeit from the tool or the charger.5. Charge the battery cartridge if you do not useit for a long period (more than six months).FUNCTIONALDESCRIPTIONCAUTION: Always be sure that the tool isswitched off and the battery cartridge is removedbefore adjusting or checking function on the tool.Installing or removing batterycartridgeCAUTION: Always switch off the tool beforeinstalling or removing of the battery cartridge.CAUTION: Hold the tool and the battery car-tridge firmly when installing or removing batterycartridge. Failure to hold the tool and the batterycartridge firmly may cause them to slip off your handsand result in damage to the tool and battery cartridgeand a personal injury.To remove the battery cartridge, slide it from the toolwhile sliding the button on the front of the cartridge.To install the battery cartridge, align the tongue on thebattery cartridge with the groove in the housing and slipit into place. Insert it all the way until it locks in placewith a little click. If you can see the red indicator asshown in the figure, it is not locked completely.123Fig.1► 1. Red indicator 2. Button 3. Battery cartridgeCAUTION: Always install the battery cartridgefully until the red indicator cannot be seen. If not,it may accidentally fall out of the tool, causing injury toyou or someone around you.CAUTION: Do not install the battery cartridgeforcibly. If the cartridge does not slide in easily, it isnot being inserted correctly.Tool / battery protection systemThe tool is equipped with a tool/battery protection sys-tem. This system automatically cuts off power to themotor to extend tool and battery life. The tool will auto-matically stop during operation if the tool or battery isplaced under one of the following conditions.Overload protectionWhen the tool/battery is operated in a manner thatcauses it to draw an abnormally high current, the toolautomatically stops without any indication. In this sit-uation, turn the tool off and stop the application thatcaused the tool to become overloaded. Then turn thetool on to restart.Overheat protectionWhen the tool/battery is overheated, the tool stopsautomatically and the lamp blinks. In this situation, letthe tool cool down before turning the tool on again.Overdischarge protectionWhen the battery capacity becomes low, the tool stopsautomatically. If the product does not operate evenwhen the switches are operated, remove the batteriesfrom the tool and charge the batteries.Protections against other causesProtection system is also designed for other causesthat could damage the tool and allows the tool to stopautomatically. Take all the following steps to clear thecauses, when the tool has been brought to a temporaryhalt or stop in operation.1. Turn the tool off, and then turn it on again torestart.2. Charge the battery(ies) or replace it/them withrecharged battery(ies).3. Let the tool and battery(ies) cool down.If no improvement can be found by restoring protectionsystem, then contact your local Makita Service Center.