10 Copyright© 2009 Nokia. All rights reserved.7. Align the back cover with theback of the device. To lock it,press the bottom of the backcover.■ Charge the batteryWarning: Use only batteries, chargers, andaccessories approved by Nokia for use with thisparticular model. The use of any other types mayinvalidate any approval or warranty, and may bedangerous.Check the model number of any charger before use withthis device. This device is intended for use when suppliedwith power from an AC-6E charger. The battery intendedfor use with this device is the BL-4C.For availability of approved accessories, please check withyour dealer. When you disconnect the power cord of anyaccessory, grasp and pull the plug, not the cord.