Battery Information - Nokia N-Gage NEM-4 Service Manual

Nokia Customer Care

Battery information

Note that a new battery's full performance is achieved only after two or three com-
plete 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 the 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.
For good operation times with Ni-Cd/NiMh batteries, discharge the battery from
time to time by leaving the product switched on until it turns itself off (or by using
the battery discharge facility of any approved accessory available for the product).
Do not attempt to discharge the battery by any other means.
Use the battery only for its intended purpose.
Never use any charger or battery which is damaged.
Do not short-circuit the battery. Accidental short-circuiting can occur when a me-
tallic object (coin, clip or pen) causes direct connection of the + and - terminals
of the battery (metal strips on the battery) for example when you carry a spare bat-
tery in your pocket or purse. Short- circuiting the terminals may damage the bat-
tery or the connecting object.
Leaving the battery in hot or cold places, such as in a closed car in summer or win-
ter conditions, will reduce the capacity and lifetime of the battery. Always try to
keep the battery between 15°C and 25°C (59°F and 77°F). A phone with a hot or
cold battery may temporarily not work, even when the battery is fully charged. Bat-
teries' performance is particularly limited in temperatures well below freezing.
Do not dispose of batteries in a fire!
Dispose of batteries according to local regulations (e.g. recycling). Do not dispose
as household waste.
Copyright© 2004 Nokia Corporation. All Rights Reserved
Company Confidential