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 ...

If you own more than a two performance cars, then having a portable battery pack is a quick and easy resource when a battery goes flat. We looked into several portable battery packs that offer ...

You try to turn on your car, and it just won’t start. Maybe the dashboard doesn’t even light up. A likely cause: The 12-volt battery is dead. All cars lose a little battery power when parked. If you ...