Nokia 3300 - Manual (Page 210)

195 Copyright © 2003 Nokia. All rights reserved.
8. Reference information
Battery statements
Charging and Discharging
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.
Use only batteries approved by the phone manufacturer and recharge your
battery only with the chargers approved by the manufacturer. Unplug the
charger when not in use. Do not leave the battery connected to a charger for
longer than a week, since overcharging may shorten its lifetime. 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.
Use the battery only for its intended purpose.
Never use any charger or battery which is damaged or worn out.