Anker Nano Power Bank (45W, 10,000mAh)
The power bank with the cable built in, so you can't forget it
A 10,000mAh power bank with a built-in retractable USB-C cable, up to 45W output and 30W input with pass-through charging. It has a smart display and weighs about 8.2 oz.
Our take
A power bank is useless without its cable, and the cable is what gets left on the hotel nightstand. That's the real failure point, not capacity. This Anker fixes it by building the USB-C cable into the pack, and it retracts, so it isn't flapping around in your bag.
10,000mAh is the right size for a day out, when maps, photos and translation apps are eating your battery in Rome or Seoul. Up to 45W out means it can charge a tablet or small laptop at a decent speed too. Pass-through charging lets you plug the pack into the wall and charge your phone through it overnight, so one outlet does two jobs. The display shows how much charge is left. Anker lists it as flight-approved, so it goes in your carry-on.
This is the one we'd buy for city trips. Check the price before you fly.
Who it’s for
City sightseers and day-trippers who rely on their phone for maps, tickets and photos from morning to night.
Skip it if
Skip it if you need to run a laptop through a long workday away from outlets. Get a higher-capacity power bank instead.
Anker Nano Power Bank (45W, 10,000mAh): questions people ask
Can you take a 10,000mAh power bank on a plane?
Yes, in your carry-on. Most airlines allow power banks up to 100Wh, and a 10,000mAh pack is well under that. They aren't allowed in checked bags, and some airlines limit using them in flight, so check yours.
How many times will a 10,000mAh power bank charge a phone?
Usually one to two full charges, depending on your phone's battery size. Some energy is lost in conversion, so you never get the full rated capacity.
What is pass-through charging?
It means the power bank can charge your device while the pack itself is plugged into the wall, so you can top up both from one outlet.
Where we recommend it
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Prices change often — the price on the retailer’s page is the one you pay.