Nokia Digital Pen SU-1B User Guide - Page 23

5. Battery information ■ Charging and Discharging Your device is powered by a rechargeable battery. Note that a new battery's full performance 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, it is time to buy a new battery. 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. Use the battery only for its intended purpose. Never use any charger or battery which is damaged. Leaving the Digital Pen 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). Digital Pen with a hot or cold battery may temporarily not work, even when the battery is fully charged. Batteries' performance is particularly limited in temperatures well below freezing. Copyright © 2003 Nokia. All rights reserved. 23