Question

Why do some devices use batteries and other devices use a wall outlet for power?

Answer 1

Some devices are used while moving around from place to place ... like in the car, on a bicycle, running, or walking the dog. If not for batteries, those devices would need very long extension cords.

Answer 2

The explanation regarding why do  some devices use batteries and other devices use a wall outlet for power is described below;

The following information should be considered:

• Some devices are used at the time of moving around from place to place such as in the car, on a bicycle, running, or walking the dog.
• If it is not for batteries, those devices would need very long extension cords so that the connection does not get disturbed.

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