How do I disable APC Back-UPS ES-750's replace battery sound?

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Hello.

How do I disable APC UPSes' replace battery's constant high pitch tone in an old APC Back-UPS ES-750? I know its old battery need to be replaced, but I don't want to power it off since I still need to use the electronics connected to them.

Thank you for reading and hopefully answering soon. 🙂

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