Anker 621 Magnetic Portable Charger MagGo - Pocket-Sized Power

In this review of the Anker 621 Magnetic Portable Charger (MagGo), the bottom line is simple: if you want a compact, convenient backup for quick top-ups on a compatible iPhone, this is one of the best pocket-friendly options. The reviewer found it especially useful for short trips and days when a full charge is not required, because its strong magnets and slim profile make it easy to keep attached and use one-handed. It is not a replacement for a full-size power bank, but its design and handy USB-C cable make it a practical magnetic companion for everyday carry.

Key Features

• MiniCell technology: Delivers the same charging performance with fewer components so the unit is noticeably smaller and lighter than traditional 5,000mAh packs.
• Pocket-sized power: The slim form factor snaps to a compatible iPhone and easily slips into a pack, purse, or pocket for everyday portability.
• Strong attachment: Ultra-strong magnets hold the charger firmly to iPhone 14 and 15 models so you can take selfies or make calls without it slipping off.
• Snap alignment: Magnetic alignment removes common wireless misalignment issues and reduces interruptions while charging on the go.
• Included cable and support: Ships with a 23.6 in USB-C to USB-C cable, a welcome guide, and a 24-month warranty backed by customer service.

Who It's For

The Anker 621 MagGo is aimed at iPhone owners who prioritize convenience and portability over maximum capacity - commuters, light travelers, and anyone who wants a reliable mid-day boost without carrying a bulky power bank. Photographers and frequent callers will appreciate the secure magnetic hold that lets you use the phone normally while topping up.

People who need multiple full charges, or who frequently recharge large-capacity phones, should look elsewhere for higher-capacity options. Also, users who cannot tolerate any device heating during wireless charging may prefer a wired-only solution.

Pros & Cons

Pros

• Compact, lightweight design that truly fits in a pocket or small bag.
• Very secure magnetic attachment that keeps the charger aligned while in use.
• Includes USB-C to USB-C cable and a 24-month warranty for peace of mind.

Cons

• Not a full replacement for larger power banks due to expected energy loss and limited usable capacity per charge.
• Some users report noticeable heating during wireless charging, which is a normal result of conversion inefficiency.

Specifications

Brand	Anker
Model	621 Magnetic Portable Charger (MagGo)
Capacity	5,000mAh (nominal)
Compatibility	Magsafe-compatible iPhone 12/13/14/15/16 series
Connector	USB-C to USB-C cable included (23.6 in / 60 cm)
Warranty	24-month limited warranty

Our Verdict

The Anker 621 MagGo is a strong choice for anyone who needs a lightweight, magnetic backup battery for short top-ups and everyday carry. Its compact MiniCell design, reliable magnets, and included USB-C cable deliver clear convenience, though buyers should accept reduced usable capacity and some heat generation during wireless charging. Overall, good value for commuters and casual users who prioritize portability.

Frequently Asked Questions

How many full charges can I expect?
Because of energy loss in conversion circuitry, a 5,000mAh pack typically provides roughly 2,750mAh to 3,250mAh usable output, so expect less than one full charge for larger phones.

Will the charger get warm while charging?
Slight heating is normal during wireless charging due to efficiency losses; most customers report it gets noticeably warm but not dangerously hot.

Does it work while attached to the phone?
Yes, the ultra-strong magnets keep the unit aligned so you can single-hand operate the phone while it charges.