Anker Nano Magnetic Qi2 Power Bank 5000mAh

Overview

A 5,000mAh magnetic battery pack rated for Qi2-certified 15W wireless charging, built to a 0.34 inch profile so it stacks flat against an iPhone without adding much pocket bulk.

Anker markets the Nano around thinness first, and the Qi2 certification is the detail that matters more than the wattage number: it is what keeps the magnetic ring aligned to the phone's coil the way MagSafe does, instead of the loose fit that non-certified magnetic packs sometimes have. Anker is explicit that it is tuned for iPhone and does not recommend it for Android handsets.

• Qi2-certified 15W magnetic wireless output
• 0.34 inch thin profile
• Graphene cooling with dual NTC temperature chips
• USB-C port for wired charging up to 20W

Who it's for

IPhone owners, particularly on the 15, 16 or 17 series, who want a slim top-up battery that snaps on rather than plugging in. Less suited to Android users, since Anker specifically advises against that pairing.

Pros and cons

Performance notes

The Qi2 magnet ring keeps the coils lined up for a steady 15W transfer, and Anker quotes roughly 42 minutes to reach 25% on an iPhone 16 Pro under lab conditions, so real-world speed will vary with case thickness and ambient temperature. Graphene cooling and dual NTC chips are there to hold the surface under 104F, and a USB-C port lets the same pack recharge itself or top up another device at up to 20W.

Specifications

Closest rivals on specs

Trkoy W5 Slim MagSafe Power Bank 5000mAh

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• Battery Weight 0.27 vs 0.09 pounds (+200%)

HELLEE N18 Power Bank with Built-in Cables 15000mAh

• Amperage 5 vs 3 amps (+67%)
• Battery Capacity 5 vs 15 amps (-67%)
• Battery Charge Time 1.7 vs 3 hours (-43%)

ZZI P1 Pro Power Bank 60000mAh

• Amperage 5 vs 3 amps (+67%)
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• Battery Charge Time 1.7 vs 7 hours (-76%)