Need a power bank that can keep up with your power-hungry gaming handheld, like the Steam Deck or ROG Ally X? Woot! has the perfect deal: the Anker PowerCore 737 24,000mAh 140W Power Bank for just $69.99. Amazon Prime members get free shipping; otherwise, add $6. This is the lowest price we've seen for this top-rated charger. I've used this power bank extensively over the past year, enduring multiple 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), best suited for a travel bag or backpack. It features two USB Type-C ports and one USB Type-A port. The USB Type-C ports boast a maximum 140W power delivery—either 140W from a single port, or a combined 140W across both (e.g., 70W + 70W, or 100W + 40W), depending on connected devices.

This means it easily handles charging various gaming handhelds at their maximum rates: Steam Deck (up to 38W), Asus ROG Ally (up to 65W), Asus ROG Ally X (up to 100W), and Nintendo Switch (up to 18W). You can even play and charge simultaneously!

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

TSA-Approved

The Anker 737's 74Whr capacity comfortably meets TSA carry-on requirements for power banks (under 100Whr). While its size might attract attention, I've personally passed through numerous airport checkpoints with only one minor check (at Tokyo NRT) and had no issues.

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