50% Off Anker Power Bank for Steam Deck, Asus ROG Ally X

Author: Julian May 14,2025

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, 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 need to pay $6. This is the lowest price we've seen for this top-rated charger for the Steam Deck and Asus ROG Ally X. Having used this power bank for over a year, I can attest to its durability; it's been on numerous flights and road trips and is still going strong.

Anker 737 24,000mAh 140W Power Bank for $69.99

Anker 737 PowerCore 24K 24,000mAh Power Bank with 140W USB Type-C Power Delivery

$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 a travel bag or backpack than a 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, either as 140W from a single port or a combination of 140W across both ports, such as 70W + 70W or 100W + 40W, depending on the devices connected.

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 simultaneously.

With a 20,000mAh battery, equivalent to a 74Whr capacity, and an 80% power efficiency rating, you get about 59Whr of usable charge. This means the power bank can fully charge a Steam Deck 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 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.

The Anker 737 is TSA-approved

The TSA allows power banks under 100Whr in carry-on luggage (check-in is prohibited). The Anker 737, with its 74Whr capacity, falls safely within these limits. While its size might prompt a check, it's generally cleared without issues. I've passed through numerous airport checkpoints, including Tokyo NRT, and encountered no problems.

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