Cell phone charging.

[Camper6]

Have you ever wondered what the voltage output of your cell phone charger is.

I checked it out today with a voltmeter on the cable.

There's a transformer that reduces the  voltage from the mains plug in. In Canada it's 120 volts.

The output is 5 volts. So the battery in the cell phone should be about 4 volts.

[Dave]

Have you ever wondered what the voltage output of your cell phone charger is.

I checked it out today with a voltmeter on the cable.

There's a transformer that reduces the  voltage from the mains plug in. In Canada it's 120 volts.

The output is 5 volts. So the battery in the cell phone should be about 4 volts.

It's not something I've ever thought about

[Camper6]

It means you can use your charger for other things even batteries.