Please be careful not to overcharge the battery.

The rechargeable battery has run out, so I'm going to buy a new one.

He is majoring in electrical engineering.

Electric baths are a great way for relaxation and promoting health.

He is undergoing electrotherapy for his back pain.

It's difficult to understand the principles of electrooptics.

My specialty is telecommunications.

He is an expert in electrodynamics.

He was sentenced to death by electric chair.

He is good at playing the electric guitar.