These are the best portable chargers for charging speed and portability from CR's tests. These power banks are a lifeline ...

A power bank that can charge both your phone and your laptop is worth its weight in gold while on the go because you never ...

but these pocketable battery packs are usually not powerful enough to keep an unplugged and energy-hungry MacBook going all day. We’ve rounded up the best portable laptop power banks with ...

these compact cells power all manner of portable devices. A particularly common use is in laptop batteries, where they’re often built into a pack using the Smart Battery System. This creates a ...