(2) Avoid storing battery cartridge in a con-tainer with other metal objects such asnails, coins, etc.(3) Do not expose battery cartridge to wateror rain.A battery short can cause a large currentflow, overheating, possible burns and even abreakdown.6. Do not store the tool and battery cartridge inlocations where the temperature may reach orexceed 50 °C (122 °F).7. Do not incinerate the battery cartridge even ifit is severely damaged or is completely wornout. The battery cartridge can explode in a fire.8. Be careful not to drop or strike battery.9. Do not use a damaged battery.10. Follow your local regulations relating to dis-posal of battery.SAVE THESE INSTRUCTIONS.Tips for maintaining maximumbattery life1. Charge the battery cartridge before completelydischarged. Always stop tool operation andcharge the battery cartridge when you noticeless tool power.2. Never recharge a fully charged battery car-tridge. Overcharging shortens the batteryservice life.3. Charge the battery cartridge with room tem-perature at 10 °C - 40 °C (50 °F - 104 °F). Leta hot battery cartridge cool down beforecharging it.4. 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.3121. Red indicator 2. Button 3. Battery cartridgeTo 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 on theupper side of the button, it is not locked completely.CAUTION: 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.Battery protection systemLithium-ion battery with star marking11. Star markingLithium-ion batteries with a star marking are equippedwith a protection system. This system automaticallycuts off power to the tool to extend battery life.The tool will automatically stop during operation if thetool and/or battery are placed under one of the followingconditions:Overloaded:The tool is operated in a manner that causes it to drawan abnormally high current.In this situation, release the switch trigger on the tooland stop the application that caused the tool to becomeoverloaded. Then pull the switch trigger again to restart.If the tool does not start, the battery is overheated.In this situation, let the battery cool before pulling theswitch trigger again.