Nokia SU-2 User Guide - Page 17

2. Battery information Your SU-2 Image Viewer can be powered by 4 AAA batteries. Make sure that you change the batteries regularly to ensure the longest operation time. Note that if you use a compatible Nokia charger as a power supply, you do not need to remove the batteries from the SU-2 Image Viewer. In addition, note that the SU-2 Image Viewer does not use the batteries when it is connected to a charger. ■ Charging and Discharging 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 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. 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 metallic 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 battery in your pocket or purse. Short-circuiting the terminals may damage the battery or the connecting object. Leaving the battery 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 device with a hot or cold battery may Copyright © 2003 Nokia. All rights reserved. 17