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The Anker 737 (PowerCore 24K) class of bank is for people who already carry a USB-C laptop charger and want a second tank, not for people who want a slim wallet accessory.
Charge math
24,000 mAh is the sticker. Usable watt-hours after conversion are less. It can top a phone several times and give a 13-inch laptop a real meeting. It will not replace wall power for a 16-inch machine all day.
What you feel in a bag
It is heavy. That is the point. If you want light, buy a smaller bank and accept fewer laptop minutes. The screen that shows watts is useful when a cable is pretending to be 100 W and is not.
Who should skip it
Skip it for weekend city trips with a phone only. Skip no-name clones with the same look. Confirm airline Wh labeling on the unit you actually hold.
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