Anker 737 Power Bank Now $49.99: 70% Off Deal

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 has an unbeatable deal right now. You can grab the Anker PowerCore 737 24,000mAh 140W Power Bank for just $49.99—a massive $20 below our previous lowest price alert, and likely the best price this powerhouse will ever hit. Woot, the seller, is an Amazon-owned marketplace, ensuring a reliable and seamless shopping experience. I’ve personally used this exact model for years, and it’s proven rock-solid through countless flights and road trips, still performing like new.

Anker PowerCore 737 24,000mAh 140W Power Bank – $49.99
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The Anker PowerCore 737 stands out as one of our top picks for charging the Steam Deck on the go. While it’s on the larger side—measuring 4.6" x 2.2" x 2" and weighing 1.4 lbs—it’s designed for travel, fitting perfectly in a backpack or carry-on. Its robust build includes two USB-C ports and one USB-A port, with both USB-C ports supporting up to 140W USB Power Delivery. This means it can deliver full 140W from a single port or dynamically distribute power across both (e.g., 70W + 70W or 100W + 40W), making it ideal for multi-device setups.

For gaming handhelds, this power bank is more than capable:

• Steam Deck: Supports up to 38W charging
• ASUS ROG Ally: Up to 65W
• ASUS ROG Ally X: Up to 100W
• Nintendo Switch: Up to 18W

Thanks to its 140W output, the Anker 737 can charge all these devices at their maximum supported speeds—even the demanding ROG Ally X—while allowing you to play and charge simultaneously without throttling.

Battery capacity is where this power bank truly shines. With a 24,000mAh (74Whr) battery and an 80% power efficiency rate, you get approximately 59Whr of usable energy. This translates to:

• 1.5 full charges for a Steam Deck (40Whr) or ROG Ally (40Whr)
• 0.75 charges for the ROG Ally X (80Whr)
• About 3.7 full charges for a Nintendo Switch (16Whr)

Given the power demands of modern handhelds, we consider 20,000mAh (74Whr) the minimum recommended capacity for serious gamers—making this 24,000mAh model an excellent upgrade.

TSA-Approved for Air Travel

The Anker PowerCore 737 is fully compliant with TSA carry-on regulations, which require power banks to be under 100Whr. At 74Whr, it’s well within the limit. While its size might draw a second look during security screening, it’s allowed in carry-on luggage. I’ve personally carried it through multiple international airports—including a brief inspection at Tokyo’s Narita Airport—and cleared without issue every time.

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