If you're in the market for a power bank that can keep up with the high demands of gaming handhelds like the Steam Deck or ROG Ally X, Amazon has an incredible deal on offer. You can snag the Anker PowerCore 737 24,000mAh 140W Power Bank for just $49.99. This deal is available through Woot, which is owned by Amazon, and it's a significant $20 drop from the last lowest price we reported. Having used this power bank for several years across numerous flights and road trips, I can confidently say it's still in top condition and highly recommend it.
Anker 737 24,000mAh 140W Power Bank for $49.99
Anker 737 PowerCore 24K 24,000mAh Power Bank with 140W USB Type-C Power Delivery
$149.99 save 67%
$49.99 at Amazon
The Anker 737 is one of our top picks for charging a Steam Deck. It's a bit on the larger side, measuring 4.6"x2.2"x2" and weighing 1.4lbs, making it more suitable for a travel bag or backpack rather than a pocket. It comes equipped with two USB Type-C ports and one USB Type-A port. The USB Type-C ports can deliver a maximum of 140W of power. This means a single port can deliver up to 140W, or both can be used in combination to provide up to 140W total, depending on the devices plugged in (e.g., 70W + 70W or 100W + 40W).
For gaming handhelds, the Steam Deck supports up to 38W, the Asus ROG Ally up to 65W, the Asus ROG Ally X up to 100W, and the Nintendo Switch up to 18W. The Anker 737 can charge all these devices at their maximum rates, allowing you to play and charge simultaneously.
With a 20,000mAh battery, which translates to a 74Whr capacity, and an 80% power efficiency rating (typical for power banks), you get approximately 59Whr of usable charge. This is enough to fully charge a Steam Deck (40Whr) or Asus ROG Ally (40Whr) 1.5 times, an Asus ROG Ally X (80Whr) 0.75 times, and a Nintendo Switch (16Whr) about 3.7 times. This capacity makes it clear why a 20,000mAh power bank is considered the minimum for power-hungry devices like the Steam Deck and Asus ROG Ally, especially the Ally X.
The Anker 737 is TSA-approved
TSA regulations state that power banks must be under 100Whr for carry-on luggage (check-in is prohibited). The Anker 737 safely falls under this limit at 74Whr. While its robust appearance might prompt a check, you should have no issues getting it through airport security. I've personally passed through numerous checkpoints, with only one inspection at Tokyo NRT, and cleared without any problems.
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