Nokia HDW-3 - Manual (Page 23)

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4. Battery information
Your headset is powered by a rechargeable battery. Take good care of the battery
and follow the guidelines below.
Charging and discharging
• The full performance of a new battery is 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 is noticeably shorter than normal, buy a new battery.
• Use only Nokia approved batteries, and recharge your battery only with Nokia approved
chargers designated for this device. Unplug the charger from the electrical plug and the
device when not in use. Do not leave the battery connected to a charger. Overcharging
may shorten its lifetime. If left unused, a fully charged battery will lose its charge over
time.
• Temperature extremes can affect the ability of your battery to charge.
• To prolong battery life of NiMh batteries, discharge the battery from time to time by
leaving your headset switched on until it turns itself off. 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 that is
damaged.
• Leaving the headset in hot or cold places, such as in a closed car in summer or winter
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 headset with a hot or cold battery