Panasonic KX-TCA121EXT, Service Manual, Page: 7 / 111

4.3. Battery Life
After your Panasonic batteries are fully charged, you can expect the following performance:
Ni-MH batteries (700 mAh)
Operation Operating Time
While in use (talking) 20 hours max.
While not in use (standby) 170 hours max.
Note:
·
Actual battery performance depends on a combination of how often the handset is in use (talking) and how often it is not
in use (standby).
· Battery operating time may be shortened over time depending on usage conditions and ambient temperature.
4.4. Battery Replacement
If flashes even after the handset batteries have been charged for 7 hours, the batteries must be replaced.
Important:
·
We recommend the use of Panasonic rechargeable Ni-MH batteries P03P (HHR-4EPT). If you install non-rechargeable
batteries and start charging, the batteries may leak electrolyte.
· Do not mix old and new batteries.
1. Press the notch on the handset cover firmly and slide it in the direction of the arrow.
2. Remove the old batteries positive ( ) terminal first and install the new ones.
Note for Service:
· You could use other rechargeable batteries on sale, but the unit is not guaranteed to work properly.
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KX-TCD220SLT / KX-TCA122EXT / KX-TCA121EXT