For a limited time, Amazon is offering the popular INIU 10,000mAh USB power bank for just $8.99 after clipping the 10% off coupon on the product page and applying promo code "4WJNEP2X" during checkout. This is a new lower price than what we saw earlier this week. INIU power banks have solid reviews and are less expensive than equivalent Anker models.INIU 10,000mAh Power Bank for $9Also Clip the 10% Off CouponINIU 10,000mAh USB Power BankThis INIU power bank features a 10,000mAh (37Whr) capacity, which can charge a Nintendo Switch OLED from completely empty to full about 1.9 times, an iPhone 16 about 2.2 times, and an iPhone 16 Pro Max about 1.7 times. Note that this power bank doesn't have high speed Power Delivery, which means you're getting a maximum charging rate of about 15W. That's not quite fast enough to max out the charging rate of the iPhone or Switch (both cap at about 18-20W), it's not that much slower, and for $10 there's little reason to complain.With a power bank this small, you don't need to worry about being stopped at airports. The 10,000mAh capacity is well below TSA's 27,000mAh carry-on limit. The INIU power bank is also slim and compact so it's unlikely anyone will take notice in the first place. If a TSA official actually does take the initiative to test the wattage, you are well in the clear.Looking for more options? Check out the best power banks for travel.Why Should You Trust IGN's Deals Team?IGN's deals team has a combined 30+ years of experience finding the best discounts in gaming, tech, and just about every other category. We don't try to trick our readers into buying things they don't need at prices that aren't worth buying something at. Our ultimate goal is to surface the best possible deals from brands we trust and our editorial team has personal experience with. You can check out our deals standards here for more information on our process, or keep up with the latest deals we find on IGN's Deals account on Twitter.Eric Song is the IGN commerce manager in charge of finding the best gaming and tech deals every day. When Eric isn't hunting for deals for other people at work, he's hunting for deals for himself during his free time.