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Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest price update (UTC time):
Input: 5V-3A / 9V-3A / 12V-3A / 15V-3A / 20V-2.25A, Material: ABS, Working temperature: 5 – 35 Deg.C, Package weight: 0.8000 kg, USB-C: 5V-3A / 9V-3A / 10V-5A / 12V-3A / 15V-3A / 20V-2A, Dimensions and Weight, about 6.5 hours (18W charger), Rated capacity: 12000mAh (5V / 5.4A), Model: PB2050ZM, Charging time: about 11 hours (5V/2A charger), Type: Portable Mobile Powers, about 4.5 hours (45W charger), Three ports: 5V-5.4A / 9V-3A / 10V-5A / 12V-3A / 15V-3A / 20V-2A, Product size (Lx Wx H): 15.35x 7.35x 2.75 cm / 6.04x 2.89x 1.08 inches, Product weight: 0.5000 kg, Package size (Lx Wx H): 16.00x 10.00x 4.00 cm / 6.3x 3.94x, Battery energy: 74Wh / 3.7V / 20000mAh, Power (W): 50W MAX, USB-A (dual port): 5V-3A, USB-A (single port): 5V-3A / 9V-3A / 12V-2.25A / 20V-1.35A, Output: 50W MAX
Banggood
Banggood warehouse is located in China. As you can see I didn’t find any active coupon for this product right now…
Link: Banggood product page
Price: $-3
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): aff7off, Email5, BG50wpb5, 2020CNY, BGVDay10%off, bGhOnEy10, BGXMI15, BGdragonBoat, BGAFF10OFF, BGSS10%SW, bgshOOp10, BgoFErTaSchInA10, BgcLuBofErtA10, BGXiaomi50WBank, BG15POWERBANK, 7d18f7, BG8107IT, BG3Xiaomi50W, BGCuponation10, 13f142, BGHONEY2110, 7bcdf9, BANGGOODSD, BGCCARG, BG85d5c6, BGAlerabat, 2022ACTIESNL, Tabby20, BG1efeb0
(I don’t think these’re gonna work, but you can try ’em out anyway)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – Xiaomi Power Bank 3 20000mAh 50W Super Flash Edition [EU] ($-3)
Price history and price alert
Do you need price history chart (for all/most countries) for Xiaomi Power Bank 3 20000mAh 50W Super Flash Edition? There we go.
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)).
. Hmmm… There is no active coupon in Banggood at this moment. I don’t know if this is a good price – number of records in my database is too low!