PANASONIC
REPLACING MEMORY BATTERIES
Many Panasonic telephone systems have a battery that holds up the memory in the event of a power failure.

Like most batteries they will fail after a period of time.

The KX-TEA and KK-TDA15 do have these batteries on board and so may some of the other systems.

Always remember to take a backup before removing the old battery.

The Battery is a CR2354 and is soldered to the motherboard with tags.  Getting batteries with tags nowadays can be difficult so some people solder a battery holder in place of the old battery and then fit a CR2032 battery into the holder.

The pictures below are of a TDA15

The battery is the yellow object to the left

 

Close up of the battery

 

Another close up of the battery

 
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Last revised: March 12, 2025

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