Discover how to make a DIY hand-powered mobile phone charger using simple materials such as two small DC motors and a piece ...
Learn how to make a simple lemon battery and use it as an emergency phone charger in this hands-on science experiment. Watch step-by-step as we cut lemons, prepare copper and aluminum electrodes, and ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results