Why should you buy a portable power bank?

Whether you need to charge your phone, tablet, or laptop, these portable power banks will help keep you connected wherever your travels take you.

How do I choose a portable power bank?

Connection types vary across all portable power banks, cell phones, computers, headphones, tablets, and electronics brands. So, make sure to choose a power bank with ports that are compatible with the devices you need charged most often.

What is the best power bank to charge a phone?

After putting in hundreds of hours of research and testing, we’ve found that the Belkin Boost Charge Plus 10K is the best power bank to charge a phone, tablet, or another small, handheld device. It’s an all-around great portable charger that can offer you peace of mind whenever wall outlets are out of reach. Best for...

Which power bank should I buy?

The Nimble Champ is our top recommendation for most folks, but we have all sorts of alternatives here. Read our Best MagSafe Power Banks guide for Apple-specific portable chargers, and our Best Portable Power Stations guide if you need more power. Updated June 2025: We've added power banks from Redmagic and Statik, and added a new FAQ.

How much power does a power bank give a phone?

Our testing shows that a power bank can offer your phone about 70% of the power it contains. It loses the rest due to the inefficiency of the power transfer. That means a 5,000 mAh battery can fully charge a phone with a 3,500 mAh battery, like an iPhone 16.

Do you need a power bank?

For this guide alone, I’ve spent more than 100 hours cumulatively researching and testing power banks. Most people can find use for a USB power bank (also called an external battery pack, backup battery, or portable charger) to keep phones and other devices charged while on the go.