If you're searching for an Anker power bank capable of powering demanding devices like the new Xbox Ally X handheld gaming PC or the latest 16-inch MacBook Pro, the model I personally use and recommend is now on sale. Amazon is offering Prime members the Anker PowerCore 737 24,000mAh Power Bank with 140W Power Delivery for just $74.99 with free shipping. I've owned and regularly used this specific power bank for several years on flights and road trips, and it consistently performs as expected. While many reliable battery brands exist today, Anker remains one of the most trustworthy options available on Amazon.
Get the Anker 737 24,000mAh 140W Power Bank for $74.99

Exclusive offer for Amazon Prime members
Anker 737 24,000mAh Power Bank with 140W USB Type-C Power Delivery
6$109.99 save 32%$74.99 at Amazon
The Anker 737 remains one of our top-rated Steam Deck chargers. This robust power bank measures 4.6"x2.2"x2" and weighs 1.4lbs, making it ideal for a travel bag or backpack rather than a pocket. It features two USB Type-C ports and one USB Type-A port. The USB-C ports support up to 140W of total Power Delivery output, which can be delivered through a single port or split across both, depending on the connected devices (e.g., 70W + 70W or 100W + 40W).
For gaming handhelds, charging capabilities vary: the Steam Deck supports up to 45W, the Asus ROG Ally up to 65W, the Xbox Ally X and Legion Go 2 up to 100W, and the Nintendo Switch and Switch 2 between 20W and 30W. The Anker's 140W output is sufficient to charge any of these devices while you play. It's also perfectly suited for the new 16-inch MacBook Pro, which accepts up to 140W.
The 24,000mAh capacity provides 89Wh of total energy. With a typical 80% power efficiency, you get about 71Wh of usable charge. This translates to approximately 1.8 full charges for a Steam Deck or Asus ROG Ally (40Wh), nearly one full charge for an Xbox Ally X (80Wh), and about 3.6 charges for a Nintendo Switch 2 (20Wh). This highlights why a 10,000mAh power bank is too small for power-hungry handhelds when even this 24,000mAh model can only fully recharge an Xbox Ally X once.
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