Anker Nano A1665 Magnetic Qi2 5,000mAh Power Bank

Anker Nano A1665 is a slim magnetic power bank with a listed 5,000mAh capacity, Qi2 wireless charging and USB-C output. Its compact format suits topping up a compatible phone while out, but customer feedback is mixed on charging speed and heat.

At a glance

The manufacturer describes the power bank as 8.6mm thin, with 5,000mAh capacity and Qi2 certification.
Manufacturer claims up to 15W MagSafe-compatible wireless charging and up to 20W USB-C charging.
Listed as compatible for wireless charging with iPhone 12 through 16 series, with stated exceptions, plus selected AirPods and MagSafe-compatible cases.

Price

£37.97Save 24%

Reference price: ~~£49.99~~

Price checked: 12 Nov 2026

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Often bought together

Anker Power Bank, 25,000mAh Travel Essential with 165W Total Output | 3 USB-C Ports with 100W Max Each, Built-In Retractable Cables, Flight-Ready, for iPhone 17/18 Series, and More

£65.55

Pros and cons

Pros

Slim, compact format and magnetic attachment make it convenient to carry and use on compatible phones.
Offers both magnetic wireless charging and USB-C charging, with manufacturer-claimed output up to 15W and 20W respectively.

Cons

The 5,000mAh capacity is modest for buyers seeking several full phone charges or a shared multi-device reserve.

Technical specifications

17 specifications

Identity
Brand	Anker
Model	A1665
Colour	Black
Compatible devices	Smartphone

Charging and battery
Battery capacity	5000 Milliamp Hours
Battery cell type	Lithium Polymer
Connector	USB Type C
Number of ports	1
Maximum USB-C output	powerful 20W Max USB-C charging
Output wattage	20 Watts
Wireless charging standards	MagSafe, Qi
Voltage	5 Volts
Amperage	3 Amps
Battery charge time	3 Hours
Power configuration	Corded Electric

Dimensions and installation
Dimensions listed	10.2 x 7.1 x 0.9 centimetres
Weight listed	0.24 Pounds

What to know before buying

Listing details to confirm

Listing dimensions show 0.9 centimetres thickness, while feature text says 8.6mm. The product-detail figures also list 20 Watts and up to 20W USB-C output, while title and feature copy specify Qi2 and up to 15W MagSafe-compatible wireless charging. Treat wireless and wired figures as different modes, and check the selected model details before buying. Manufacturer material says charging performance varies and cases thicker than 2.5 mm or phone use while charging may increase heat. It estimates 2,750mAh to 3,250mAh usable capacity after stated conversion losses.

Who is it for?

A good fit for

iPhone owners seeking a slim magnetic top-up battery for compatible models.
Buyers who want a pocketable charger with both wireless charging and USB-C output.

Less suited to

Anyone prioritising high capacity for multiple full charges or charging several devices at once.
Buyers who need consistently fast charging or are especially sensitive to heat during charging.

Anker Nano A1665 Magnetic Qi2 5,000mAh Power Bank · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.3 / 5 · 5,398 ratings

5 stars70%70%
4 stars13%13%
3 stars6%6%
2 stars4%4%
1 star7%7%

Customer feedback often praises the slim, compact and lightweight design, portability and magnetic hold. Reports on charging speed and value are mixed, with some finding charging quick and others slow or the price hard to justify. Heat is a concern in customer feedback. This matters for a pocket-sized 5,000mAh charger intended for on-the-go top-ups, particularly if charging speed or heat is a priority. The aggregate ratings lean positive overall, but do not resolve these differing experiences.

Positive themes

Customers appreciate the slim build, portability and magnetic connection.

Negative themes

Heat during use is a reported concern.

Mixed feedback

Customers give mixed feedback on charging speed and value for money.

Frequently asked questions

What is the listed battery capacity?

The product details list 5000 Milliamp Hours. The manufacturer also estimates about 2,750mAh to 3,250mAh effectively available after battery and circuit losses.

How quickly can it charge a phone?

The manufacturer claims up to 15W MagSafe-compatible wireless charging and up to 20W USB-C charging. Actual speed depends on the phone and conditions, and customer feedback on charging speed is mixed.

Which devices are listed for wireless charging?

The listing names iPhone 12, 13, 14, 15 and 16 series, except iPhone 12 mini, 13 mini and 16e, as well as AirPods 4, AirPods 3, AirPods Pro 2, AirPods Pro and MagSafe-compatible phone cases.