$18.99 – KUULAA KL-YD47 Mini 4500mAh Built-in Type-C Plug Emergency Power Bank External Battery Power Supply Fast Charging for iPhone 12 13 14 14Pro 14 Pro Max – Black+Type-C.
According to my DB the lowest price is $18.99 for KUULAA Mini Power Bank 4500mAh (in Banggood). Just check coupons out (with price alert and history). You probably want to know what is the best price?
Latest coupon and price update (UTC):
Banggood ($18.99)
Banggood warehouse is located in China. There are no active coupons for this product, but the price is pretty low isn’t it? Is it expensive? Well, this price is higher than average price ($13.20)
Link: Banggood product page
Price: $18.99
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): BG589b2e
(probably won’t work, but you can try them out)
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
Click here to search by yourself. Here are coupons that you can use.
Price history and price alert
Check out price history chart (for all/most countries) for KUULAA Mini Power Bank 4500mAh. The lowest price was: $11.61.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).