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Most of the stored energy is disappated as heat, about 10% is converted to electromagnetic radio waves that couple with the surrounding environment, about one billionth of the energy makes it to a receiver where the signal is converted into a digital signal that symbolizes information packets.

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11y ago
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8y ago

Cell phones, mobile phones, even smart phones and tablets are very energy efficient because they are designed to run on a battery for a long period of time. Cell Phones use approximately 2 to 6 watts when charging, while a charger left plugged in without a phone will consume 0.1 to 0.5 of a watt. Charging an iphone or android phone under normal use conditions will typically cost under a dollar for a full year.

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12y ago

the battery is the energy source a cell phone produces.

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9y ago

Electrical energy is changed into chemical energy in the battery. Some is also converted to waste heat.

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9y ago

at least half of the percente.

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Q: What energy source is used to power cell phones?
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