Mitel OpenPhone 27 Telephone User Manual


 
Page 5
Connecting the Charger
Connect the cable from the adapter plug into the base of the charger and then insert the adapter
plug into the mains socket.
Charging the Batteries
You can charge and discharge the batteries hundreds of times, but they will eventually be
depleted. When the operating time (that is, the call time and standby time) has become noticeably
shorter, replace the batteries. When charging batteries, you should adhere to the following
guidelines:
Discharge the battery at intervals to achieve long operating times. To discharge the battery,
leave the handset on, but do not place it in the handset charger. Do not attempt to
discharge the battery using other methods.
Charge the battery for six to seven hours before using your handset for the first time. The
maximum performance of the battery is only reached after three to five charging and
discharging cycles.
Place your handset in the charger unit regularly in order to reach the optimum battery charge.
- Charging time: 6 to 7 hours from discharged to full capacity.
- Call time: up to 20 hours (fully charged).
- Standby time: up to 200 hours (fully charged).
After you replace the batteries, the charge level icon will not be displayed until an entire
charge cycle is complete.
Caution: Only use the batteries as directed. Never use a damaged battery. Heat and cold
reduce the performance and the life of the battery. A handset with either a hot or a cold
battery can be temporarily out of operation, even if the battery is fully charged. Dispose of
used batteries in accordance with your local regulations. Never throw a battery into a fire.
An icon in the handset display shows the charge level of the battery.