Learn how to make a simple lemon battery and use it as an emergency phone charger in this hands-on science experiment. Watch ...

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 ...

Learn how to make a simple electric doorbell at home in this step-by-step tutorial. Using everyday materials like cardboard, ...

SAN FRANCISCO -- During an emergency, it's important to keep your cellphone handy and charged. In the event the power goes out, it's going to be even more difficult to find a place to plug back in and ...

Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? Winter is coming … and so too could be a dead car battery. Colder weather can quickly ...

Scientists at the SLAC-Stanford Battery Center have discovered a way to significantly increase the durability and lifespan of rechargeable batteries. In their research paper, which was published in ...