Consultant pilot fish gets a call from a client at a property management company who complains, “My battery won’t stop chirping. It’s really annoying. Can you replace it?”

Do you mean the backup power supply? fish asks. When the client confirms that’s it, fish explains that the UPS is getting older and likely is warning about a defective battery, and the entire unit should probably be replaced.

Trouble is, fish is on the road, 120 miles away. But the client tells him, “I’ll go down the street and buy a new one.”

Fifteen minutes later, client calls fish back and complains that the new UPS is also making the chirping noise, just like the old one did.

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