Phone accessories review

Anker 621 Magnetic Battery (MagGo) Review: Worth It or Just Another Gimmick?

A thin magnetic battery pack built for MagSafe iPhones.

Anker 621 Magnetic Battery (MagGo) product image
Image source: anker.com.

Best for

  • People who want the thinnest possible magnetic battery for an iPhone
  • Travelers who care more about pocketability than maximum capacity

Not for

  • People who need a high-capacity bank for multiple full phone charges
  • People who want the cheapest magnetic charger available

Watch out

  • Price and stock should be checked against the live listing before purchase.
  • Independent coverage may emphasize tradeoffs that are easy to miss on the product page.

Source-backed takeaways

  • Anker's MiniCell design aims to shrink the pack without changing the core charging experience.
  • TechRadar describes it as the ideal light and thin MagSafe battery pack.

Pros

  • Very slim and easy to carry.
  • Good match for on-the-go MagSafe charging.
  • Independent coverage specifically praises its light, thin design.

Cons

  • Limited by the usual tradeoff of smaller magnetic packs: portability over capacity.
  • Price and stock should be checked against the live listing before purchase.

Bottom line

A thin magnetic battery pack built for MagSafe iPhones. TechRadar calls it the ideal light-and-thin option when portability matters more than capacity.

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Sources

Gadget or Gimmick

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Last updated: 2026-04-29

How we review: This is a source-backed product review. We analyze official specifications, independent testing, and verified retailer feedback to bring you honest, concise recommendations. No hands-on testing claimed.