Which iPhones does the Anker 621 MagGo work with?

It is made for MagSafe iPhones, the iPhone 12 and later. Older iPhones can charge over USB-C but will not magnetically attach.

How many charges does it add?

The 5,000 mAh battery adds roughly one full charge to a typical iPhone, less if the phone is in heavy use.

Does it charge through a case?

Yes with MagSafe or other magnetic cases. Thick or non-magnetic cases weaken the grip and can slow charging.

Can I use the phone while it is attached?

Yes. The pack is slim enough to leave on during calls, photos and navigation, though it adds some bulk and warmth.

Is $29.99 a good price?

It is a strong price. The 621 usually sells for around $40 to $50, so $29.99 at Amazon as of November 7, 2026 is near its low.

The battery and a 60 cm USB-C cable. A wall charger is not included.

Where is the Anker 621 Magnetic Battery (MagGo) cheapest?

At Amazon, for $29.99, as of our latest check.

Where can I buy the Anker 621 Magnetic Battery (MagGo)?

3 stores we checked sell it, including Best Buy, eBay, Amazon.

Anker 621 Magnetic Battery (MagGo)

Best price now

$29.99at AmazonObserved at 12:56 PM

Compared across 3 stores. Prices are checked against each store and labelled with when. As an Amazon Associate, Deal.ai earns from qualifying purchases.

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Our take on the Anker 621 Magnetic Battery (MagGo)

The Anker 621 MagGo is a slim magnetic power bank that snaps onto the back of MagSafe iPhones and charges them wirelessly, with a USB-C port for wired top-ups. It is about 0.5 inch thick and weighs little enough to leave attached during a call or a walk. The 5,000 mAh cell adds roughly one full charge, not several. At $29.99 at Amazon as of November 7, 2026, it sits at the low end of its recent range and well under its typical $40 to $50 asking price.