Over a period of time as the batteries ran down, her voice diminished.

Our most powerful battery can only run one for eight minutes.

Then the batteries ran out and everything just dropped in a pile down the far end of the room.

He'd left his cell phone on, and now the battery was running down.

The battery can run either 4 or 5 hours, depending on configuration.

But the battery had run down and he hadn't got another one.

Once that the battery inside has run out of energy, the whole thing stops working.

"I think my emotional batteries might have run dry after that one," he said.

I was like a mechanical man with the batteries run down.

The batteries are charged each night and can run for about seven or eight hours at a time.