Anker

Anker 621 Magnetic Battery

Capacity:: 5,000mAh
Max Output:: 12W Max
Wireless:: MagSafe-Compatible, 7.5W
Weight:: 129 g (0.28 lb)

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Manufacturer: Anker Last updated: 2026-09-15

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Anker 621 Magnetic Battery Review

Anker 621 Magnetic Battery (MagGo) is a compact 5,000mAh magnetic power bank designed for iPhone 12/13 with 7.5W wireless charging and MiniCell tech for a smaller footprint.

Anker's original slim MagGo battery, built specifically for iPhone 12 and 13. MiniCell tech keeps it thin, and the PU-leather coating resists scratches while attached. It's a legacy design now, but a real, purchasable model.

Design

MiniCell construction reduces size versus earlier magnetic batteries; PU-leather coated back for scratch resistance.

Charging

Up to 7.5W max magnetic wireless output; recharges via USB-C at up to 12W in about 2 hours.

Our verdict

Reviewed by Burooj Alam. Rated by us, not by users.

Best for

iPhone 12/13 series owners
Ultra-compact magnetic backup power

Not for

iPhone 14 and later (undersized fit)
Android users
Fast charging needs

Specifications

What these specs mean

Identity

Brand	Anker

Capacity

Capacity mAh	5000 mAh

Output power

Single Port Max Output	12W (USB-C, 5V/2.4A)
Max Output With All Ports	12W Max

Ports

Output Port Count	1 ports
USB-C Port Count	1 ports
AC Outlet	No
Built-in Cable	No

Recharging

Recharge Input Power	12W (USB-C 5V/2.4A)
Recharge Time	2 min

Display and controls

Display Type	No

Size and portability

Weight	129 g
Length	104.9 mm
Width	66.5 mm
Thickness	11.4 mm

FAQs

What are the key specifications of the Anker 621 Magnetic Battery (MagGo, 5,000mAh, USB-C, 12W Max)?

Key specs for the Anker 621 Magnetic Battery: Capacity 5000 mAh, Ports 1x USB-C, Magnetic Wireless, Max Single-Port Output 12W (USB-C, 5V/2.4A), Total Output 12W Max, Laptop Charging 60W+ No, AC Outlet No.

Will the Anker 621 Magnetic Battery (MagGo, 5,000mAh, USB-C, 12W Max) work with my current setup?

The Anker 621 Magnetic Battery (MagGo, 5,000mAh, USB-C, 12W Max) lists Capacity is 5000 mAh. Check that against the hardware you already own before buying, since this is the field that most often decides whether a part fits.

Who is the Anker 621 Magnetic Battery (MagGo, 5,000mAh, USB-C, 12W Max) best suited to?

Best suited to: iPhone 12/13 series owners; Ultra-compact magnetic backup power.

What are the drawbacks of the Anker 621 Magnetic Battery (MagGo, 5,000mAh, USB-C, 12W Max)?

Not the best fit for: iPhone 14 and later (undersized fit); Android users; Fast charging needs.