6 Batter y Char gerw w w . d e l l . c o m | s u p p o r t . d e l l . c o m• To help avoid the potential hazard of electric shock, do not connect or disconnect anycables or perform maintenance or reconfiguration of this product during an electricalstorm. Do not use your battery charger during an electrical storm unless all cables havebeen disconnected and the computer is operating on battery power.• Before you clean your battery charger, remove power. Clean your battery charger with asoft cloth dampened with water. Do not use liquid or aerosol cleaners, which may containflammable substances.Power• Use only the Dell-provided AC adapter approved for use with this battery charger. Use ofanother AC adapter may cause a fire or explosion.• Before you connect the battery charger to an electrical outlet, check the AC adaptervoltage rating to ensure that the required voltage and frequency match the availablepower source.• To remove the battery charger from all power sources, turn the computer off, remove thebattery pack, and disconnect the AC adapter from the electrical outlet.• To help prevent electric shock, plug the AC adapter and peripheral power cables intoproperly grounded power sources. These power cables may be equipped with three-prongplugs to provide an earth grounding connection. Do not use adapter plugs or remove thegrounding prong from the power cable plug. If you use a power extension cable, use theappropriate type, two-prong or three-prong, to mate with the AC adapter power cable.• Be sure that nothing rests on your AC adapter’s power cable and that the cable is notlocated where it can be tripped over or stepped on.CAUTION: Safety Instructions (continued)