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

They might not charge any faster, but they will be recharged more times if you pick a high-capacity battery pack. The Anker Prime 27650mAh Power Bank is one of the most powerful laptop power banks ...

Is your phone, tablet, or laptop typically in the battery red zone before the day's end? These portable chargers and power banks give you the most boost when you're out of juice. I’m a Mobile ...

If you own a laptop that’s got a few years on the clock, you’ve probably contemplated getting a replacement battery for it. Which means you also know how much legitimate OEM packs cost ...

Tesla famously build their battery packs from standard 18650 lithium-ion cells, but it’s safe to say that the pack in the Model S has little in common with your laptop battery. Fortunately for ...