Why can’t a single portable battery work with all of devices (laptop, phone, camera, etc

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Why does every product have a list of devices it can work with and cant?

In: Engineering

5 Answers

Anonymous 0 Comments

Problem 1, the port. USB is not universal, especially if you own a proprietary device like an apple. But that’s only half the battle.

Problem 2 is voltage. Laptops use more of it, 12 to 16v is normal, whereas a phone can take a 5v input(usb standard voltage).

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