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Power Bank Dual Input Powerbanks are becoming popular these days as our gadgets or devices were all getting smarter & versatile tools in our daily lives specially for various types of communications such as calls,sms,emails and other task,and these smart devices (smartphones & tablets) needs more power for them to work and last for a day as they should be. Normally the devices that needs a back up power are the smartphones & tablets these days.And most of us individually owns one.But not all people knew how powerbank works literally.And some sellers just don’t explain on how their Powerbank works.And many people just end up buying the wrong specifications of powerbank that suits the need of their devices (such as smartphones & tablets).That’s the reason I made this and compiled some facts gathered from different manufacturers and blogs site ,and made it into one instructables that may help some DIY’ers who planned to build their own powerbank or just buy the right one.

Power Bank Dual Input are all the rage, they came in various shapes and sizes.,but what are they for? We explore their potential, and how to choose the right one.
What is a Power Bank and what can they charge?
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 (deposit it in the bank) and then later use it to charge up a mobile device (withdraw it from the bank). Power Banks have become increasingly popular as the battery life of our beloved phones, tablets and portable media players is outstripped by the amount of time we spend using them each day. By keeping a battery backup close by, you can top-up your device(s) while far from a wall outlet.

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