Nokia 7210 - Manual (Page 19)

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IMPORTANT BATTERY INFORMATION
Important:Your phone is powered by a rechargeable battery.
Use only batteries approved by Nokia and recharge your battery only with
the chargers approved by Nokia. Never use any charger or battery which
is damaged.
The battery can be charged and discharged hundreds of times but it will
eventually wear out. When the operating time (talk-time and standby
time) is noticeably shorter than normal, it is time to buy a new battery.
PROLONG THE BATTERY
Use the following guidelines to obtain the best performance from
your battery:
• With your phone turned off, charge your new battery for three hours
before its first use. Use the battery until it is fully discharged. Repeat
this procedure twice for a total of three charging cycles.
• Note that a new battery's full performance is achieved only after two
or three complete charge and discharge cycles. Battery operation
time may be less than the estimated times during the first charges.
This condition is normal.
• You can use your phone while the battery is charging. However, if the
battery is completely empty, it may need to recharge a few minutes
before you can make or receive calls or the battery indicator appears.
• After the first charge, you can make and receive calls during the
charging cycle, but the calls interrupt the charge. When the phone
call ends, the charge will resume.
• The bars on the screen stop scrolling and remain constant when the
phone is fully charged. If you leave the phone connected to the
charger, the battery receives an additional charge. If you switch the
phone on when charging is complete, the message Battery full
momentarily appears in the display.
Note: The battery will accept a "trickle charge" for an additional
two hours.