5.1V-2.6A (Dual Ports), Battery Type: lithium ion polymer battery, Size: 150.5 X 73.6 X 15.1mm, Model: PB100LZM, Input: 5V-2.1A, Capacity: 37Wh 3.7V 10000mAh, Output: 5.1V-2.4A (Single Port), 1x USB-C, Package size: Approx. 18×9.5×3.5cm / 7.09x 3.74x 1.38 inches, Output Ports: 2x USB-A (USB cable not included), Input Ports: 1x Micro USB, Package weight: Approx. 350g /12.35os.
Price history, coupons and price alert are available on this page. You probably want to know what is the 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 China. Well, there is one coupon available right now.
Link: Banggood product page
1. ($31.50): BG85d5c6
this code has to be applied in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/i1u
Old coupons (from the oldest to the newest): BGredmip1, aff7off, BGaDmITAd, BGrm1w, BGREDMIPOWER, 0e7f33, FBCOUPON1, BGRMPBa, BGXMI15, BG9Redmi100, BGRedmi10000Bank, BGRedmi10000CNCZ, BG15POWERBANK, BG12Redmi10CN, BGAFF10OFF, BGCuponation10, 13f142, BGHONEY2110, BG38f626, BANGGOODSD, 6GSGIT, BGCCARG
(these coupons are old, so probably won’t work)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – Xiaomi Redmi 10000mAh PB100LZM Power Bank [EU] ($-3)
Price history and price alert
Here is price history (for all/most countries) for Xiaomi Redmi 10000mAh PB100LZM Power Bank. The lowest price was: $14.99.
Price records source(s): Gearbest, 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)).