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"Portable Chargers", also known as power banks, are compact and transportable devices designed to provide an external power source for electronic devices such as cell phones, tablets, and digital cameras. They come in various capacities, measured in milliampere hours (mAh), which determine how many times they can charge a device before needing to be recharged themselves. Portable chargers typically feature one or more USB ports for charging multiple devices simultaneously, and some models even offer fast-charging capabilities. They are essential for people who rely heavily on their electronic devices while on the go, ensuring that they never run out of power during important moments.