The NITECORE Carbo 20 is not the most feature-packed 20,000mAh power bank you can buy, nor is it remotely the cheapest. What it offers instead is robust durability and portability. Power banks have become a little ridiculous. Some now have colour displays, multiple built-in cables, enough ports to resemble a desktop docking station, and charging outputs capable of powering laptops that were once considered portable only because they had handles. All very ...

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