Model A110B, 20100mAh, 72.36Wh.

It’s 510g, about the footprint of a tall can, and it moves 140W down a single USB-C port.

In testing published by Portable Power Backup it drove a 16-inch MacBook Pro at the full 140W on a 5A cable and hit 50 percent in 28 minutes. Half a battery, in the time it takes to clear security.

Three ports share a 220W ceiling. In practice that means the laptop keeps its speed while a phone and earbuds take what they need, and the screen shows what each port is doing, so you can see whether the cable you grabbed is the fast one.

The watt-hour figure is 72.36Wh, and no Anker page prints it. It comes from that same independent review, and it puts the bank comfortably inside the 100Wh limit airlines apply to cabin baggage.

One reservation. Anker runs no brand-direct programme with us, so Amazon is the only route we can offer.

Airline: 72.36Wh, inside the usual 100Wh carry-on limit. Always check your airline.

Model A1695, 25000mAh.

Alan owns this one and has carried it through a full travel day. Two cables live in the body, which sounds like a small thing right up until the morning you leave a cable on a hotel desk in Chicago.

Three USB-C ports each reach 100W. The 165W figure is the two-device total, not a single-port number, and that distinction gets misreported often enough to be worth stating plainly.

It refills at 100W, so it’s back to useful over a lunch break rather than overnight.

The costs are honest ones. It’s 594g, and a built-in cable can’t be swapped when it wears out. Anker publishes no watt-hour figure for it either, so if you fly often, the Prime 20K or the 87W below give you a number you can show at a gate.

Airline: the maker publishes no watt-hour figure for this one, which is worth knowing before you fly. See our airline rules guide.

Model P63-E1, 25000mAh.

The trick here is density. It holds 25000mAh at 397g, where the two other 25000mAh banks on this page both land close to 600g. That’s a coat pocket instead of a bag.

Cubed3 charged a 14-inch MacBook Pro to 42 percent and an iPhone 15 to 65 percent in 25 minutes. The main USB-C port does 100W, the second does 45W, the USB-A does 18W.

So this is the pick for a 13 or 14-inch laptop and a phone, carried every day. It’s not the pick for a 16-inch machine, where 100W will hold the battery steady but fill it slowly.

One thing to know before you fly. INIU publishes no watt-hour figure for it, and we won’t invent one. At 25000mAh it’s almost certainly inside the cabin limit, but almost certainly isn’t the same as printed on the case where a gate agent can read it.

Airline: the maker publishes no watt-hour figure for this one, which is worth knowing before you fly. See our airline rules guide.

Model A110A, 26250mAh, 99.75Wh.

That watt-hour figure is the reason this pick exists. Notebookcheck reports it at 99.75Wh, a quarter of a watt-hour under the 100Wh ceiling airlines apply to cabin baggage. It’s the most capacity you can board with, no permission needed.

300W is a total across three ports, never a single-port figure. Either USB-C port gives 140W on its own, and the USB-A gives 22.5W.

On recharging we can only give you Anker’s own number. Anker states 140W in, or 150W using its own charger and protocol. No independent source we could find has verified either, so treat both as the manufacturer’s claim rather than a measurement.

It’s the largest and heaviest thing on this page. That’s the trade, and if you don’t need 99.75Wh, the Prime 20K at the top does the same job in a smaller body.

Airline: 99.75Wh, inside the usual 100Wh carry-on limit. Always check your airline.