Question

What is power Bank ?

Note :

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Answer 1

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Power banks can be defined as portable batteries that use circuitry to control any power in and power out. They can charged up using a USB charger when power is available, and then used to charge battery powered items like mobile phones and a host of other devices that would normally use a USB charger.

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Answer 2

Power bank refers to Portable Power Banks are comprised of a special battery in a special case with a special circuit to control power flow. They allow you to store electrical energy and then later use it to charge up a mobile device .

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