The Anker 737 is still one of our highest rated favorite Steam Deck chargers. This is a relatively hefty power bank, measuring 4.6"x2.2"x2" and weighing in at 1.4lbs. It's something you'd put in your travel bag or backpack instead of your pocket. It's equipped with two USB Type-C ports and one USB Type-A port. The USB Type-C ports support a maximum of 140W of power delivery. That means a single port could deliver 140W, or both ports will deliver a combination of 140W depending on which devices are plugged in (for example, 70W + 70W or 100W + 40W).
In terms of gaming handhelds, the Steam Deck supports up to 45W of charging, the Asus ROG Ally up to 65W, the Xbox Ally X and Legion Go 2 up to 100W, and the Nintendo Switch and Switch 2 between 20W and 30W. The Anker's 140W power output means it can charge all of these gaming handhelds even while you're playing at the same time. The new MacBook Pro 16" accepts up to 140W of charging, so the Anker 737 is a perfect battery for it as well.
A 24,000mAh battery equates to a 89Whr capacity. An 80% power efficiency rating (which is about standard for power banks) gives you about 71Whr of available charge. That means this power bank will charge a Steam Deck (40Whr) or Asus ROG Ally (40Whr) from empty to completely full 1.8 times, an Xbox Ally X (80Whr) 0.9 times, and a Nintendo Switch 2 (20Whr) about 3.6 times. You can see why a 10,000mAh power bank is too small for the more power hungry handhelds if even a 24,000mAh capacity power bank can top up an Xbox Ally X only one time.
Eric Song is the IGN commerce manager in charge of finding the best gaming and tech deals every day. When Eric isn't hunting for deals for other people at work, he's hunting for deals for himself during his free time.
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