Mitel NETVISION PHONE - Manual (Page 9)

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BATTERY CHARGING
Charge/Discharge
Fully charge the battery for the NetVision Data Phone before first using the
phone. A fully charged battery provides approximately 90 minutes of talk
time and 40 hours standby operation per charge.
As the battery discharges, the battery strength indicator on the display
shows more white space.
Battery attaching/detaching
z
Attach the battery to the phone by aligning the feet on the battery with
the notches on the phone. Push the top of the battery into the phone until
the latch clicks.
z
Detach the battery by depressing the catch and pulling the top of the
battery from the phone.