Which is better for charging an iPhone on the go?

The 621 MagGo, if you want to snap it on and skip the cable. The Zolo charges the same iPhone faster and more times, but you plug in.

Which lasts longer per charge?

The Zolo. Its 20,000mAh is about four times the 621's 5,000mAh, so expect several phone charges versus roughly one.

Is the Zolo worth it over the 621?

At $29.99 versus $42.99 as of November 7, 2026, the Zolo gives far more capacity and power for less money. Pick the 621 only if wireless convenience matters more than capacity.

Can the Zolo charge a laptop?

It tops out at 45W total and 30W on USB-C, which is enough for a phone or small tablet but short of most laptop chargers.

Does the 621 work with Android phones?

It is built for MagSafe-compatible iPhones. Android phones can use its USB-C port but will not get magnetic wireless charging.

How fast is the 621's wireless charging?

It outputs up to 12W wirelessly, slower than the Zolo's 30W wired USB-C charging.

Anker 621 MagGo Power Bank vs Anker Zolo 20,000mAh Power Bank

Buy the Anker 621 MagGo if you want a slim magnetic pack that snaps onto an iPhone and charges without a cable. Buy the Zolo if you need capacity and speed: 20,000mAh and up to 45W output versus 5,000mAh and 12W. On price, the Zolo is cheaper right now at $29.99 at eBay as of November 7, 2026, while the 621 is $42.99 at Walmart.

Today the Anker Zolo 20,000mAh Power Bank costs $13.00 less at its best price.

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