Nokia BH-216 User Guide - Page 16

Unplug the charger from the electrical plug and the device when not in use. Do not leave a fully charged battery connected to a charger, since overcharging may shorten its lifetime. If left unused, a fully charged battery will lose its charge over time. Always try to keep the battery between 15°C and 25°C (59°F and 77°F). Extreme temperatures reduce the capacity and lifetime of the battery. A device with a hot or cold battery may not work temporarily. Battery performance is particularly limited in temperatures well below freezing. Do not dispose of batteries in a fire as they may explode. Batteries may also explode if damaged. Never use any charger that is damaged. Important: Battery talk and standby times are estimates only and depend on network conditions, features used, battery age and condition, temperatures to which battery is exposed, and many other factors. The amount of time a device 16 Copyright © 2009 Nokia. All rights reserved.