Check coupons or create price alert down below. Best price?
Weight 1.43oz, Input DC 5V/1A 5W, Dimensions L-4.82″xW-1.15″xH-1.26″, Output Current 800mA (max), Output Voltage 4.2V±1%
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 China. There is one coupon right now! Check this out.
Link: Banggood product page
1. ($10.54): 00c906
apply it 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): BGUI1, EYBG, BGTORCH, BGAFF10OFF, BgoFErTaSchInA10, 4BLF, BgcLuBofErtA10, BGFLS15, BGHONEY2110, BG10OFFAFF, BGwhielabel, 13f142, BG10OFFAFF1, BANGGOODSD, BGTorch4
(there’s a little possibility that old coupon will work)
Price history and price alert
Price history (for all/most countries) for Nitecore UI1 Battery Charger is here.
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)).