The most portable mobile power bank

What are the best portable chargers & power banks in 2025?

November 18, 2025: With this update, our lineup of recommended portable chargers and power banks remains unchanged. The existing picks have been vetted for currency and availability. The Anker Laptop Power Bank has a capacity of 25,000mAh, but more importantly, it can deliver 100W of power from a single port.

What is the best power bank?

I’ve found the best power banks usually come from Anker, but newer brands like Cuktech and Iniu are also starting to make a name for themselves. Anker’s A1383 20,000mAh power bank is my top pick for its hefty battery capacity, fast-charging and built-in cable, but the Iniu P41-E2 10,000mAh power bank is a nice budget portable charger.

What is a power bank?

Power banks provide a reliable power reserve: compact, rechargeable units that keep phones, laptops, and tablets running when outlets are out of reach. Power banks range from tiny keychain models to 25-pound monsters. For this guide, we focused on the most useful category: personal-use portable banks.

How much power does a power bank give a phone?

Our testing shows that a power bank can offer your phone between 70-80% of the power it contains, or more depending on the battery. 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.