Can a power bank charge my laptop while I'm using it?

Yes, if the power bank's output meets or exceeds your laptop's power draw. A 100W bank will keep a MacBook Air running and charging. A MacBook Pro 16\

How many laptop charges can I get from a 20,000mAh power bank?

Roughly 0.7-1 full MacBook Air charge or 0.5-0.7 MacBook Pro 14\

Best Laptop Power Banks USB-C 2026