Power supply

  • Powerbanks, wireless chargers and other products from Aukey at reduced prices. Ends 14.4.2026

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  • Here’s why batteries have strange designations like CR2032

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    by Martin Jungfer

  • Testing powerbanks for everyday use: 10 models, one surprising winner

    Guide

    by Lorenz Keller

  • Batteries tested by "Saldo": The cheap ones beat the expensive ones

    News + Trends

    by Martin Jungfer

  • Charging without a cable: why the best iPhone charger isn’t made by Apple

    Guide

    by Lorenz Keller

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