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Russell H.
Russell H., Service Tech
Category: Phone Systems
Satisfied Customers: 11080
Experience:  8+ years of professional experience
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I have a Panasonic KX-TA624 phone system. It is plugged into

Customer Question

I have a Panasonic KX-TA624 phone system. It is plugged into a black backup battery box that started beeping last week. On Saturday the phones stopped working. We eventually plugged the phone system directly into a electric outlet and now the system is working. What do I need to do to fix the backup supply.
Submitted: 1 year ago.
Category: Phone Systems
Expert:  Russell H. replied 1 year ago.

Hi, thank you for contacting My name is Russell. I will do my best to provide the right answer to your question.

Depending upon the maker and model of the black battery backup box, you may need this or that specifically.

But it sounds to me, all told, as if you have to have it serviced, or at the very least replace the battery in it. All rechargeable batteries in electronic devices nowadays have a limited lifetime and do fail eventually, in a year and a half to several years of active use or inactive disuse, or sometimes sooner.

That the battery backup box ceased (evidently) to provide power supports this assumption, that the battery in it most likely went dead, and that was what the beeping (a self-detection failure alarm) was about.

The battery backup box, at a guess, is a 'UPS' or Uninterruptible Power Supply. Those stabilize power supplied to devices by passing power from the wall into a charging circuit for a battery, then taking power for the device running off it, from a charged battery. When the battery gives out or dies, then the device won't run because the battery won't supply power enough to it.