$21 Power Bank: Fast Charges Nintendo Switch, Steam Deck

Affordable High-Speed Charging Solution

Gamers seeking budget-friendly power banks for their Nintendo Switch, Steam Deck, or Asus ROG Ally should consider Amazon's current promotion. The INIU 20,000mAh Power Bank featuring 65W USB-C Power Delivery is available for just $21.59 when applying the 40% discount voucher (promo code WN9GQJRA may be required). INIU's models consistently earn positive reviews while being more affordable than comparable Anker products. This specific unit maintains a 4.5-star average from 2,600 Amazon reviews with a Fakespot "B" reliability rating.

Power Capacity Breakdown

The 74Wh battery (accounting for 80% efficiency) provides approximately:

• Nintendo Switch (16Wh): ~3.7 full charges
• Steam Deck/ROG Ally (40Wh): ~1.9 full charges
• ROG Ally X (80Wh): ~1 full charge
• Lenovo Legion Go (50Wh): ~1.5 full charges

Charging Specifications

Featuring three output ports:

• 65W USB-C
• 36W USB-C
• 18W USB-A

The 65W port delivers maximum charging speeds for most handhelds, matching OEM charger performance for ROG Ally X and Legion Go devices.

Budget Alternative

The 10,000mAh version currently drops to $8.99 with stacked discounts, capable of ~1.9 full Switch charges - an exceptional value under $10.

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