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Power supply

  • The grand powerbank showdown: which battery is worth it?

    Guide

    by Lorenz Keller

  • With these tips, your car battery won't go flat in winter

    Guide

    by Lars Petersen

  • With Swiss and Lufthansa you are no longer allowed to use a power bank on board

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    by Lorenz Keller

  • Dynamic electricity tariffs: the risk is manageable with an EMS

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  • Surprising Qi2 test: iPhone charges fastest on Google’s puck

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    by Lorenz Keller

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