If you're in the market for a power bank that can keep up with the high energy demands of gaming handhelds like the Steam Deck or ROG Ally X, Woot! has an unbeatable deal for you. You can grab the Anker PowerCore 737 24,000mAh 140W Power Bank for just $69.99. Amazon Prime members enjoy free shipping, while others will pay a modest $6. This price is the lowest we've seen for what we consider one of the top chargers for the Steam Deck and Asus ROG Ally X. Having personally used this power bank for over a year, I can attest to its durability; it's been a reliable companion on numerous flights and road trips.
30% $149.99 save 53% $69.99 at Woot!
The Anker 737 is a robust power bank, measuring 4.6"x2.2"x2" and weighing 1.4lbs, making it more suitable for your travel bag or backpack than your pocket. It features two USB Type-C ports and one USB Type-A port. The USB Type-C ports can deliver up to 140W of power. This allows for a single port to output 140W, or both ports can share 140W, depending on the connected devices (e.g., 70W + 70W or 100W + 40W).
For gaming handhelds, the Steam Deck requires 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 at the same time.
With a 20,000mAh battery translating to a 74Whr capacity and an 80% power efficiency rating, this power bank provides approximately 59Whr of usable charge. This means it can fully charge a Steam Deck or Asus ROG Ally (both 40Whr) about 1.5 times, the Asus ROG Ally X (80Whr) about 0.75 times, and the Nintendo Switch (16Whr) approximately 3.7 times. This demonstrates why a 20,000mAh capacity is essential for power-hungry gaming handhelds like the Steam Deck, Asus ROG Ally, and especially the Ally X.
TSA regulations state that power banks must be under 100Whr for carry-on luggage (check-in is prohibited). The Anker 737, with its 74Whr capacity, comfortably fits within these limits. Although its large size might attract some attention at airport security, it's been cleared without issue in my experience, including once at Tokyo NRT.
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