Best power banks for flying: Anker and Belkin picks

Product	Best for	Price	The deciding fact, and the catch	Link
Anker Nano Power Bank 10K, 45W	Best for most flights	$59.99	10,000 mAh and 45 W with a built-in cable, but Anker's page doesn't state Wh and output halves with two ports in use.	Visit
Anker Laptop Power Bank 25K, 165W	Best for laptops	$119.99	90 Wh stated and 165 W total, but it weighs 595 g and sits close to the 100 Wh cap.	Visit
Belkin UltraCharge 22K Power Bank	Best for three devices	$99.99	22,000 mAh with a retractable cable and two USB-C ports, labeled TSA carry-on compliant. The page gives no Wh, and it counts ports two ways: two USB-C in the description, one USB-C and one USB-A in the spec table.	Visit
Anker Nano Power Bank 5K MagGo	Best slim phone top-up	$54.99	122 g and 0.34 in thick for MagSafe iPhones, but the USB-C port tops out at 5V 2.4A.	Visit

Every bank here goes in your carry-on. The FAA allows spare lithium ion batteries up to 100 Wh each, and the TSA lists power banks as not allowed in checked bags (FAA page updated August 11, 2026; TSA page updated May 14, 2025). Rules for the cabin itself are in the power bank rules guide.

Prices are Anker's and Belkin's US list prices, checked on the dates shown.

1. The 10K Anker with a built-in cable

It has 10,000 mAh and a 45 W maximum, with a 2.3 ft retractable USB-C cable built in. Anker's page lists 0.51 lb. List price: $59.99, checked November 2, 2026.

Anker's page doesn't give Wh. At 3.6 V (my assumption, taken from Anker's own 25K ratio) it works out near 36 Wh. The output also drops to 22.5 W when the USB-C port and cable run together, per the same page. It's the one I'd pack for a phone and earbuds on a long-haul.

2. The 25K Anker for laptops

Anker states 90 Wh for 25,000 mAh, with 165 W total and a weight of 595 g. The page labels it flight-approved. It also says real-world output is about 63 to 70 Wh once conversion losses are counted.

At 90 Wh it's under the FAA's 100 Wh limit, so it needs no airline approval under the FAA rule. Your airline may still limit how many you carry. List price: $119.99, checked November 2, 2026. That's $59.99 for the 10K against $119.99 here; you pay for the laptop charging.

3. The 22K Belkin with two ports

Belkin's page describes a 22,000 mAh battery and a 27.5 in retractable USB-C cable, for up to 3 devices at once. Its description says 2 USB-C ports, but the spec table lists one USB-C port and one USB-A port, so I can't tell you the port count. The table also lists "Wattage 120W" without saying whether that is a total. It carries the label "TSA Carry-On Compliant". Belkin gives no Wh. At 3.6 V (my assumption) the arithmetic gives about 79 Wh. List price: $99.99, checked November 2, 2026.

A "TSA compliant" label is a maker's claim. The TSA page I read doesn't certify products.

4. The thin 5K Anker for iPhones

5,000 mAh, 122 g, 8.6 mm thick. It sticks to MagSafe iPhones 12 through 17 per Anker, which excludes the 16e, the 12 and 13 mini and the SE, and the USB-C port is limited to 5V 2.4A. Anker also notes a 5,000 mAh bank delivers an estimated 2,750 to 3,500 mAh to a device after losses.

List price: $54.99, checked November 2, 2026. The 10K above is $59.99. For that gap I'd take the bigger one unless the thin body is the point.

Why not more

Belkin's 25K laptop bank has a stated 90 Wh, but its US price isn't confirmed, so it isn't ranked. See everything under power banks in the catalog. Packing the rest of the bag? Try the best travel adapters, and for the bag itself, the best bag trackers.