Charge the BlackBerry® Wireless Headset using only the vehicle power adapter provided or other charging accessory provided or specifically approved by Research In Motion Limited (RIM) for use with this headset. Any approval from RIM under this document must be in writing and must be from a person authorized to provide such approval. Use of any other accessory might invalidate any warranty provided with the headset and might be dangerous.
Use the charging accessories provided with the headset or any other RIM approved charging accessories only from the type of power source indicated on the marking label. Before using any power supply, verify that the mains voltage is in accordance with the voltage printed on the power supply.
Do not overload power outlets, extension cords, or convenience receptacles as this might result in a risk of fire or electric shock. To reduce the risk of damage to the cord or the plug, pull the plug rather than the cord when you disconnect the charging accessory from the power outlet or convenience receptacle.
Protect the power cord from being walked on or pinched, particularly at plugs, convenience receptacles, and the point where the power cord connects to the headset. Unplug charging accessories during lightning storms or when unused for long periods of time.
Do not use charging accessories outside or in any area exposed to the elements.
For more information about connecting to the power supply, see the documentation that came with the headset.