Panasonic KX-TD500 System Reference Manual page 141

6. When one or two Expansion Shelves (KX-TD500)
are installed, connect another Battery Adaptor (KX-
A46 or KX-A46DX) with automobile type batteries
(12V DC 2) following the same procedures from 1
to 5.
Note :
Up to three pairs of automobile-type batteries can be connected to the KX-TD500 System.
If power failure occurs, each pair of batteries supplies the power to each shelf (Basic,
Expansion 1, 2) connected respectively via Battery Adaptor (KX-A46).
(KX-A46)
Automobile type
batteries (24V DC)
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F
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O F
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1
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