Extend the battery life on your Nintendo Switch 2, Steam Deck, or Apple iPhone 17 for less than $10. Amazon is currently offering the Iniu 10,000mAh 20W Power Bank for just $9.17 after a 49% off coupon that's automatically applied during checkout. 49% Discount Applied During Checkout INIU 10,000mAh 20W USB Power Bank 15 $17.99 save 49% $9.17 at AmazonThe Iniu power bank features a 10,000mAh (37Wh) battery capacity. The Switch 2 has a 5,220mAh battery, which isn't that much bigger than the 4,310mAh battery found in the original Switch. A 10,000mAh power bank, therefore, will more than double your total playtime.