We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Sarah Witman Sarah Witman is a writer focused on batteries and charging ...

Cell-phone Chargers in Purses and Bags 01:40 You don't want your cell-phone battery to run out of juice when you're on the go. All kinds of devices promise to give your phone a boost, even some ...

The Anker Nano USB-C Wall Charger (30W) has enough power to get most modern handsets back to life in no time and looks pretty ...

Read more: Battery Brands Ranked From Worst To Best To understand how a solar panel phone charger works, you really just need ...

The cell phone is pretty much technology's answer ... Another efficient way to store battery power is through portable ...

An curved arrow pointing right. Researchers at the University of Washington have created a cell phone that uses so little power, it never needs to charge and doesn't have a battery. Instead ...