$21 Power Bank Fast Charges Nintendo Switch, Steam Deck, Asus ROG Ally Multiple Times

Looking for a budget-friendly power bank that delivers fast charging for your Nintendo Switch, Steam Deck, or Asus ROG Ally? Today’s deal on Amazon is definitely worth checking out. The INIU 20,000mAh Power Bank offers up to 65W of Power Delivery via USB Type-C and is currently available for just $21.59 after applying the 40% off coupon (if it doesn’t appear automatically, try using promo code **WN9GQJRA**). INIU is known for producing reliable, high-quality power banks at more affordable prices compared to similar models from Anker. This particular model has over 2,600 reviews on Amazon with an impressive 4.5-star average rating and a Fakespot "B" grade, indicating trustworthy feedback.

INIU 20,000mAh 65W USB Power Bank

Capacity: 20,000mAh / 74Whr
Efficiency: Approximately 80%
Charging Cycles:

Nintendo Switch (16Whr): ~3.7 times
Steam Deck (40Whr): ~1.9 times
Asus ROG Ally (40Whr): ~1.9 times
Asus ROG Ally X (80Whr): ~1 time
Lenovo Legion Go (50Whr): ~1.5 times

Ports:

1 x 65W USB Type-C
1 x 36W USB Type-C
1 x 18W USB Type-A

This power bank stands out thanks to its high output capabilities. Most similarly priced units only offer up to 20-30W of Power Delivery, making this one a better-than-average choice for gamers on the go. The 65W port can charge most modern gaming handhelds at their maximum speed, while matching the official charging rate for devices like the Asus ROG Ally X and Lenovo Legion Go. It's also a solid option for Apple iPhone 16 users, as ChargerLAB testing shows the phone tops out around 30W even in Pro Max variants.

Need Something More Affordable?

Capacity: 10,000mAh
Price: Just $8.99 (after clipping both the 10% and 40% coupons)
Charges Nintendo Switch: ~1.9 times from 0% to full

If you're looking for a lighter-duty option, this 10,000mAh power bank from INIU is another great value. Deals like this—under $10—are rare for this capacity, so it's worth grabbing while available.

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