Nokia 6310i - Manual (Page 117)

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Reference information
This section provides information about the phone’s batteries, accessories,
chargers, safety guidelines and technical information. Be aware that the
information in this section is subject to change as the batteries, chargers,
and accessories change.
• BATTERIES AND CHARGERS
Your phone is powered by a rechargeable battery.
Note that a new battery’s full performance may be achieved only after
two or three complete charge and discharge cycles!
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.
This phone is intended for use when supplied with power from the Nokia
ACP-7, ACP-8 or ACP-12 charger.
Warning: When you purchase batteries, chargers, and accessories
for your phone, use only batteries, chargers, and accessories that
have received approval from the phone’s manufacturer. The use of
any other type of phone-related hardware will invalidate any
approval or warranty applying to the phone, and could also be
dangerous. For availability of approved batteries, chargers, and
accessories, check with your dealer.
• When the battery is charged, the indicator will stop scrolling.
• When you are not using a charger, disconnect it from the power
source. Do not leave the battery connected to a charger for more than
a week, since overcharging could shorten its life span. If left unused,
a fully charged battery will discharge itself over time.
Temperature extremes can affect the ability of your battery to charge;
allow it to cool down or warm up first.