Just check coupons out (with price alert and history). Let’s see what best price is ATM.
Compatible: ZMI ZI5 Ni-MH Battery, ZMI ZI7 Ni-MH Battery
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):
Banggood
Banggood warehouse is located in China. Well, there is one coupon available right now.
Link: Banggood product page
1. ($12.59): TTxBG10
coupon code has to be applied in shop’s 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
Price history and price alert
Check out price history chart (for all/most countries) for ZMI Four-slot Battery Charger from Xiaomi Youpin.
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)).