As part of its Spring Sale, Amazon is offering an incredible deal on the INIU 20,000mAh power bank, now available for just $9.99 after clipping the 50% off coupon on the product page. Finding a 20,000mAh power bank for under $10 is a rare opportunity, especially when it comes with a solid 22.5W Power Delivery over USB Type-C, which is fast enough to charge a Nintendo Switch at its optimal rate. INIU power banks are known for their solid reviews and offer a more budget-friendly alternative to similar Anker models.
INIU 20,000mAh 22.5W USB Power Bank

Original Price: $29.99
Discount: 67%
Deal Price: $9.99 at Amazon
This INIU power bank features a substantial 20,000mAh (74Whr) battery capacity. When considering an 80% power efficiency, here's how many full recharges you can expect for various gaming handhelds:
- Nintendo Switch (16Whr): approximately 3.7 times
- Steam Deck (40Whr): approximately 1.9 times
- Asus ROG Ally (40Whr): approximately 1.9 times
- Asus ROG Ally X (80Whr): approximately 1 time
- Lenovo Legion Go (50Whr): approximately 1.5 times
It's equipped with three output ports: one 22.5W USB Type-C port and two USB Type-A ports that support QuickCharge 4+. This setup is capable of charging the Nintendo Switch at its maximum rate of 18W and can charge the iPhone 16 nearly at its fastest rate, which caps at 30W for the Pro Max model according to ChargerLAB.
With its compact size of 5.3 x 1 x 2.7 inches, this power bank is well below the TSA's 27,000mAh limit for carry-on, making it an ideal travel companion that won't draw unwanted attention.
If you're looking for more options, be sure to check out the best power banks for travel.
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