When I was updating this page, then coupon price was $15.19 for XTAR VC2 Battery Charger (in Banggood). You can create price alert here, copy coupons and view price history. Let’s see what best price is ATM.
Latest price update (UTC time):
Dual Slots USB Battery Charger with LCD for 3.6V / 3.7V Li-ion Batteries
Banggood ($15.19)
Banggood warehouse is located in China. I can’t find any active coupons for this product in Banggood. But wait a sec… Is it a good price? Hmmm, price is higher than average (which is $15.06 right now), so better set price alert down below…
Link: Banggood product page
Price: $15.19
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): 159591, AC18, BGSM30%, M4BG, fInbG2020, BGff2020, BGSPR, BG10OFFAFF1, BANGGOODSD, BGTorch4, BGd57765
(there’s a little possibility that old coupon will work)
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Price history and price alert
Check out price history chart (for all/most countries) for XTAR VC2 Battery Charger.
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)).