Konfulon A7Q 20000mAh Power Bank [EU] (Banggood, Aliexpress: Battery Type Li-polymer, Input*2 USB-C & Micro DC 5V/2A, Output*3 Dual USB DC5V/2.1A+Type-C (PD 20W), USB Cable 30cm USB Micro cable, Dimension L132*W62.2*H25.1mm, Charging Time 10-12hours, Material PC+ABS, Capacity 20000mAh（LED Display）, Product Name 20000mAh power bank, Color Black/White, Model A7Q(PD 20W fast charging), Net Weight About 360g, Flashlight No (the best price with coupon)).
You can create price alert here, copy coupons and view price history. Let’s see what best price is ATM.
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in Europe 
. I don’t want to misguide you about the price. I don’t know if it’s good, because I don’t have enough records in my database… You can get coupon down below.
Link: Banggood product page
1. ($25.99): BG35a87f
this code has to be applied in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): MVC8SPRING, 8BGwbg2204
(there’s a little possibility that old coupon will work)
Price history and price alert
Not enough data to show price history chart… $25.99 is the only recorded price. It was not cheaper than that since we have saved it in DB.
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)).