Do you need a portable battery or power bank?

Watching your phone or tablet steadily run out of power when you're nowhere near an outlet is stressful. But there's an easy solution: a portable battery or power bank. They are available in many sizes and capacities and can include handy features like fast charging and multiple ports.

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.

How many USB-C and USB-a ports does a power bank have?

The power bank includes one USB-C and one USB-A port on its side, along with two innovative built-in cables. One cable forms a loop that doubles as a carrying handle, while the other is retractable and magnetically secures to the base.

Is Anker Prime a good power bank?

It's more than three times the weight of our bargain pick. The Anker Prime series of Power Banks, including the Anker Prime 27,650mAh Power Bank (250W) and the Anker Prime 20,000mAh Power Bank (200W), are for people who truly love to geek out on power banks.