Providing Remote Power

I am manning the shop on a busy afternoon. A customer comes in with a very dirty-looking TV remote.

Customer: “Hello, son. This remote isn’t working. Can I get a new one?”

Me: “Well, you are in luck. This remote is for a [Manufacturer] TV; we supply those, so if I phone our supplier they can probably send us one.”

The customer is obviously very pleased about this, and after phoning our supplier and arranging to get one sent down he says he will come back for it, so he leaves, giving me his phone number so I can phone him when it arrives. The remote arrives and the customer calls in, pays for it, and leaves. But he is back the next day:

Me: “Hello again!”

The customer tosses the remote and packaging down on the counter.

Customer: “That thing’s not working!”

Me: “Really? Well, it should work; it’s the correct model.”

The customer doesn’t sound angry at all.

Customer: “Could you check it out for me, please?”

Me: “Okay, no problem!”

I open the packaging and remove the instruction manual.

Customer: “It feels very light. Am I supposed to put batteries in it?”