Nokia Bluetooth Stereo Headset BH-903 User Guide - Page 38

Important, Never use any charger that is damaged.

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Battery information 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: Operating times are estimates only and depend on the mobile device used, features used, battery age and condition, temperatures to which battery is exposed, and many other factors. 38

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Battery information
38
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:
Operating times are estimates only
and depend on the mobile device used, features
used, battery age and condition, temperatures to
which battery is exposed, and many other factors.