Hunting for a budget-friendly power bank that can swiftly charge your Nintendo Switch, Steam Deck, or Asus ROG Ally? Look no further! Amazon currently offers the INIU 20,000mAh Power Bank, boasting up to 65W Power Delivery via USB Type-C, for just $21.59. This price is after clipping the 40% off coupon on the product page (if you don't see it, try promo code "**WN9GQJRA**"). INIU power banks consistently receive positive reviews and undercut comparable Anker models in price. This particular model boasts 2,600 Amazon reviews, averaging 4.5 stars, and a Fakespot "B" rating.
INIU 20,000mAh 65W USB Power Bank for $21.59

$44.99 $21.59 at Amazon (Use code 'WN9GQJRA')
This Iniu power bank packs a substantial 20,000mAh (74Whr) battery. Considering approximately 80% power efficiency, here's how many full charges you can expect:
- Nintendo Switch (16Whr): about 3.7 times
- Steam Deck (40Whr): about 1.9 times
- Asus ROG Ally (40Whr): about 1.9 times
- Asus ROG Ally X (80Whr): about 1 time
- Lenovo Legion Go (50Whr): about 1.5 times
The Iniu power bank features three output ports: one 65W USB Type-C, one 36W USB-C, and one USB Type-A (up to 18W). The 65W USB-C port is fast enough for most handhelds. Even for devices needing higher charging speeds (ROG Ally X and Lenovo Legion Go), it matches the charging rate of their official power bricks. Power banks in this price range typically only support 20-30W Power Delivery, making this a standout deal.
Incidentally, this power bank is also a great option for charging your Apple iPhone 16, as ChargerLAB tests indicate a maximum charging rate around 30W, even for the Pro Max.
Need Something Even Cheaper?

$24.99 $8.99 at Amazon
This 10,000mAh power bank is available for only $8.99 after applying the stacked coupons. It's rare to find a 10,000mAh power bank under $10, so grab it while you can! It'll charge a Nintendo Switch from 0% to 100% approximately 1.9 times.
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