Need an affordable power bank to fast-charge your Nintendo Switch, Steam Deck, or iPhone 16? Amazon currently offers the INIU 20,000mAh Power Bank with 45W USB-C Power Delivery for just $18.31 when you apply promo code E58LOYPK. This model holds an impressive 4.7-star average from 800+ verified Amazon reviews and carries Fakespot's "A" authenticity rating.

INIU 20,000mAh 45W USB Power Bank – Now $18.31

INIU 20,000mAh 45W USB Power Bank

Original: $39.99 | 54% Off | Now $18.31 at Amazon
Apply promo code: E58LOYPK

The INIU power bank delivers substantial 20,000mAh (74Wh) capacity. Accounting for 80% efficiency, here's how many full charges it provides for popular devices:

• Nintendo Switch (16Wh): ~3.7 charges
• Steam Deck (40Wh): ~1.9 charges
• iPhone 16 (14Wh): ~4.2 charges
• iPhone 16 Plus (18Wh): ~3.3 charges

Its triple-port configuration includes:
• Built-in 45W USB-C cable
• Additional 45W USB-C port
• 18W USB-A port

The 45W output supports maximum charging speeds for both Nintendo Switch (18W) and Steam Deck (40W). ChargerLAB testing confirms it's equally capable for iPhone 16 models, including Pro Max variants that peak at 30W charging.

The integrated USB-C cable - typically found on premium models - eliminates cord clutter. The innovative lanyard design secures neatly when traveling, with impressive durability: 44-pound cable tensile strength and 13-pound lanyard strength.

Nintendo Switch 2 Compatibility

With the Nintendo Switch 2 launching June 5, its reported 2-hour battery life for intensive gameplay makes a reliable power bank essential for extended sessions. While we'll soon publish dedicated Switch 2 power bank recommendations, this INIU model remains a future-proof choice that may support the new console's potential higher charging requirements.