wind power
anything
potential electrical energy
potential electrical energy
Electrical energy is used to charge a cell phone. When you plug your phone into a charger, the electrical energy is converted into chemical energy stored in the phone's battery. This chemical energy is later converted back into electrical energy when you use the phone.
A phone uses energy to function, which is provided by its battery. The phone does not produce energy on its own, but it can be charged using external sources such as electricity from a power outlet or a portable charger.
It depends for exaple some chargers have a light on it, that takes energy not much but it does other then that no.
I wouldnt recommend it. You never know wht could happen to your phone using a cheap charger or a charger that matches all phones the best bet is ordering one from apple.
Use a charger.
You can - but it will take longer for the phone to charge.
Most electronics will consume a little power even if they are off or not in use. In the case of a cell phone charger, you may notice that if it is plugged into the wall, but there is no cell phone charging, the charger will still be warm. I don't know the physics behind that, but anything that is plugged in will take up a little energy, even when not in use.
It is a cell phone charger that you can take with you. A cell phone charger is what you use to keep your battery from dying. You will need to charge your phone once a week or so.
i don't think they use phone chargers.