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While modern smartphones, tablets and all kinds of other devices offer up a world of possibilities, they all require one thing – power. They mostly share a common trait too, they’re generally not that power-efficient and can burn through a full charge in what seems like no time at all – this is certainly true for a lot of the power-hungry high-end smartphones you can buy today. It’s no surprise then that there are a wealth of portable battery chargers (like the Satechi 10000 mAh or the Fluxmob) on the market promising to keep your devices fully juiced when you’re away from…

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