The best power banks of 2026: Expert and lab tested

Extensive testing of dozens of portable chargers reveals which models live up to their claims. Tests measure capacity and power output, check water resistance and durability, and include extended day-to-day use to confirm real-world performance. The Anker Nano 10,000 mAh is the pick for most people: portable, solidly built, and equipped with USB-C and USB-A ports plus a built-in USB-C cable, and available for $30.

It handles smartphone top-ups well, but is too small for tablets or laptops and makes no durability claims. For faster charging the Cuktech 15 Air stood out in lab tests, reaching 100% in 54 minutes and offering two USB-C ports (65W and 27W) plus an 18W USB-A port and a TFT display; its $80 price is the main downside.

The Baseus EnerCore CR11 packs 20,000 mAh with a smooth retractable USB-C cable and a low-current mode for earbuds, though it took a little over two hours to charge to 100% in the lab.

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