When asked how a battery works, he didn't have a clue.

A battery will work as a power source for the circuit.

A passenger stopped him and asked if the batteries really worked.

To understand why that happened, it's helpful to know a little bit about how batteries work.

The marketing materials say the batteries will work for up to 10 months.

And when they found one with a key in it, the battery, unused now for several months, would not work.

Let's get to the beach and find out how the battery worked this time.

My shirt was clinging to me by the time I reached the battery works.

In order to improve the design, scientists had to know how batteries worked at the atomic level.

The battery charges quickly and works well in extreme temperatures.