Input DC 5V-2.1A, Capacity 5000mAh, Net Weight 140g, Output DC 5V-2.4A(2x USB total 2.4A), Charger Type USB Type-C, Color White, Charging Cable Micro USB, Charging Cable Length 0.3m, Working Temperature -10~40℃, Material ABS, Size 137x 68x 9.65mm, Charging Time About 2.5h, Model BW-P7.
Just check coupons out (with price alert and history). Best price?
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.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in Europe 
. I can’t tell you if this price is good – not enough records in my database, so I won’t judge. There is one coupon right now! Check this out.
Link: Banggood product page
1. ($17.66): 2022ACTIESNL
you should apply the coupon in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): BGp7bw89, BGBWP777, 13f142, BGp7wbc25, 2020CNY, BGVDay10%off, bGhOnEy10, BGBWBWP75, BGdragonBoat, BGSS10%SW, BGAFF10OFF, bgshOOp10, BGBWP7US, BgoFErTaSchInA10, BGBWP7AU, BG10BWP7CZ, BgcLuBofErtA10, BG11BWP7CNCZ, BGBWP7PRO, BGRBFBWP7, BG12BWP7AU, BG15POWERBANK, BGHU0233, BG1BWP7, 10%ForNewBW, BG2BWP7AU, BGCuponation10, 10%ForBGBW, BGHONEY2110, BANGGOODSD, BG85d5c6
(there’s a little possibility that old coupon will work)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – BlitzWolf BW-P7 5000mAh Slim Power Bank ($-3)
Price history and price alert
Price history is not available for this item (not enough database records)! The lowest price was $10.99 though.
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)).