As part of its Spring Sale, Amazon has slashed the price of INIU's 20,000mAh power bank to just $9.99 when you apply the 50% off coupon on the product page. Finding a high-capacity 20,000mAh power bank with 22.5W Power Delivery (enough to fast-charge a Nintendo Switch) under $10 is exceptionally rare. INIU power banks receive consistently positive reviews while costing significantly less than comparable Anker models.
INIU 20,000mAh 22.5W USB Power Bank
Offer Details: Clip the 50% Off Coupon
Original Price: $29.99 | Discount: 67% off | Final Price: $9.99 at Amazon
This power bank features a substantial 20,000mAh (74Wh) battery capacity. Accounting for typical 80% power efficiency, here's how many full charges it can provide for popular gaming devices:
- Nintendo Switch (16Wh): approximately 3.7 charges
- Steam Deck (40Wh): approximately 1.9 charges
- Asus ROG Ally (40Wh): approximately 1.9 charges
- Asus ROG Ally X (80Wh): approximately 1 charge
- Lenovo Legion Go (50Wh): approximately 1.5 charges
The device includes three output ports: one 22.5W USB-C port and two USB-A ports supporting QuickCharge 4+ technology. This configuration can:
- Fast-charge a Nintendo Switch at its maximum 18W rate
- Charge an iPhone 16 Pro Max near its 30W peak charging speed
The compact design (5.3 x 2.7 x 1 inches) and 20,000mAh capacity (well below TSA's 27,000mAh limit) make it ideal for air travel without raising security concerns.
View our guide to the best travel power banks for additional options.
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