Anker 737 Power Bank: Now $49.99, Save 70%
If you're in the market for a high-performance power bank capable of keeping up with power-hungry gaming handhelds like the Steam Deck or ROG Ally X, Amazon is currently offering an exceptional deal on the Anker PowerCore 737 24,000mAh 140W Power Bank—available for just $49.99. This exclusive offer comes via Woot, a trusted Amazon-owned marketplace. This price undercuts our previous best deal by a solid $20 and may very well be the lowest it’s ever been. As someone who has personally used this power bank for years across multiple flights and road trips, I can confidently say it’s built to last and performs flawlessly.
Anker PowerCore 737 24,000mAh 140W Power Bank – $49.99
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Anker PowerCore 737 24,000mAh Power Bank with 140W USB-C PD
$49.99 $149.99 (67% off) — Buy Now at Amazon
The Anker PowerCore 737 stands out as one of our top-recommended chargers for the Steam Deck. While it’s on the larger side—measuring 4.6" x 2.2" x 2" and weighing 1.4 lbs—it's designed for portability in a travel bag or backpack, not your pocket. It features two USB-C ports and one USB-A port, with both USB-C ports supporting up to 140W USB Power Delivery. This means you can deliver full 140W output from a single port, or split the power dynamically across devices—such as 70W + 70W or 100W + 40W—depending on your connected devices’ needs.
For gaming handhelds, this level of output is ideal. The Steam Deck charges at up to 38W, the ASUS ROG Ally at 65W, the ROG Ally X at 100W, and the Nintendo Switch at 18W. With the Anker 737, you can charge any of these devices at their maximum supported speed—yes, even the ROG Ally X—and comfortably play while charging without battery drain.
Battery capacity-wise, the 24,000mAh translates to 74Whr, which falls safely under the TSA’s 100Whr limit for carry-on luggage (power banks are not allowed in checked baggage). While its size might attract a second look at airport security—something I’ve experienced only once, at Tokyo’s Narita Airport—it’s fully compliant and has cleared checkpoints without issue every time.
With an estimated 80% power efficiency, the Anker 737 delivers around 59Whr of usable power. That’s enough to fully recharge:
- Steam Deck (40Whr) or ROG Ally (40Whr): 1.5 times
- ROG Ally X (80Whr): 0.75 times
- Nintendo Switch (16Whr): approximately 3.7 times
Given these numbers, a 20,000mAh (74Whr) capacity should be considered the minimum standard for serious handheld gaming on the go—especially for devices like the ROG Ally X that demand higher wattage.
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