When to purchase a new battery pack – Sony SPP-A900 User Manual
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when to purchase a new battery pack
If the battery lasts only a few minutes even after 18 hours of
charging, the usable life of the battery has expired and needs
replacement.
Contact your local Sony authorized dealer or service center, and ask
for Sony BP-T18 rechargeable battery pack.
Note
If the handset battery is completely discharged, the digital security code will be erased
and all programmed numbers will be lost from memory.
In this case, first recharge the battery for more than 18 hours, then store the numbers
into the memory for speed dialing again (see page 18). The digital security code will
be automatically set when you replace the handset onto the base unit.
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