Mobile Phone Without Battery Can Be Improved

Researchers from the University of Washington recently discovered how to make phones without batteries. Although the phone is still a prototype, its function can be tested.

The phone without the battery is still without casing, just a circuit board connected with earphones. Power consumption as quoted by KompasTekno from Slashgear on Monday (7/10/2017), only 3.5 microwatt.

The power is obtained from solar cells whose size is no more than a grain of rice. The cell collects light and radio signals around and turns them into electrical power. Mobile signals obtained from a special BTS which is about 15 meters.

According to the researchers, converting analog audio to digital is the part that consumes high power in mobile phones.

To overcome this, the prototype of the phone using a microphone and speakers that have a small vibration to change the incoming and outgoing signals.