Bose QuietComfort 3 Owner's guide - Page 5

English Español Français Preparing Your Headphones Charging the battery Preparing Your Headphones Initial charging time for a new battery is approximately two hours. After that, charging time varies depending on the battery charge state. 1. Insert the battery into the charger. 2. Swing the plug prongs out of the charger body. 3. Plug the charger into a live AC (mains) outlet. 1 2 3 Indicator: On = Charging Off = Charging complete Flashing = See "Troubleshooting" on page 10. IMPORTANT: DO NOT STORE A BATTERY IN THE CHARGER. • After charging, unplug the battery charger and remove the battery. • Storing a battery in the charger diminishes the charged state of the bat- tery over time and may permanently reduce the capacity of the battery. Battery handling and precautions • The battery does not have to be completely discharged in order to charge it. You can charge the battery at any time. • Never leave the battery in a discharged state. Charge after use and before storage. • Avoid extreme temperatures when charging the battery. Battery charging should occur within the temperature range of 32°F (0°C) to 95°F (35°C). • A fully charged battery provides approximately 25 hours of use. Replace the battery when it no longer provides adequate power after charging. To order a replacement battery, see "Troubleshooting" on page 10. • Keep the terminals on the battery, in the charger, and in the right earcup of the headphones clean at all times. Dirty terminals may cause poor electrical connections and affect performance. For cleaning instructions, see "Cleaning" on page 10. 5