Save 50% Off the Best Anker Power Bank for Steam Deck and Asus ROG Ally X

Need a power bank that can keep up with your power-hungry gaming handheld, like the Steam Deck or ROG Ally X? Woot! has a killer deal on the Anker PowerCore 737 24,000mAh 140W Power Bank – just $69.99! Amazon Prime members get free shipping; otherwise, it's a small $6 added. This is the lowest price we've seen for this top-rated charger. I've used this power bank extensively over the past year, through countless flights and road trips, and it's 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 $69.99 at Woot! (Save 53%)

The Anker 737 is a substantial power bank (4.6"x2.2"x2", 1.4lbs), ideal for travel bags or backpacks, not pockets. It boasts two USB Type-C ports and one USB Type-A port. The USB-C ports offer up to 140W power delivery—either 140W from a single port or a combined 140W across both (e.g., 70W + 70W, or 100W + 40W) depending on your devices.

This means it easily charges the Steam Deck (up to 38W), Asus ROG Ally (up to 65W), ROG Ally X (up to 100W), and Nintendo Switch (up to 18W) at their maximum rates. Simultaneous charging and gameplay are totally doable.

A 20,000mAh battery translates to approximately 74Whr. With an 80% power efficiency (typical for power banks), you get around 59Whr of usable charge. This provides roughly 1.5 full charges for a Steam Deck or Asus ROG Ally (both ~40Whr), 0.75 charges for an Asus ROG Ally X (80Whr), and about 3.7 charges for a Nintendo Switch (16Whr). This highlights why we consider 20,000mAh the minimum for power-hungry handhelds like the Steam Deck, ROG Ally, and especially the Ally X.

TSA-Approved

The Anker 737's 74Whr capacity is well below the TSA's 100Whr carry-on limit (check-in is not permitted). While its size might attract attention, I've personally passed through numerous airport checkpoints with only one minor check (Tokyo NRT), clearing without issue.

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