Power supply

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

    Guide

    by Lorenz Keller

  • Mignon, R6, CR2032: why batteries are called what they’re called

    Background information

    by Martin Jungfer

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

    Guide

    by Lorenz Keller

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

    Background information

    by Martin Jungfer

  • Too Many Leisure Batteries? Here's How to Choose the Right One

    Buying guide

Popular threads in Power supply

Go to Forum