Basically copy coupon, view price history or create e-mail price alert. Let’s see what best price is ATM.
Ni-MH / Ni-Cd AA AAA AAAA C, Output Voltage 4.35V/4.2V/3.65V/1.48V ±1%, Optimal working environment 5%(0℃)-90%(35℃) (fully-laden regular activity), Output Current 0.5A/1A, Size 115mm×37mm×32mm (Length/Width/ Height), Weight 45g+17g(micro USB cable), Input Power Micro USB DC 5V/1A, Storage temperature 0℃-40℃, Li-ion 26650 22650 18650 18490 18350 17670 17500 16340 14500 10440 16340(RCR123A), Compatible with LiFePO4 / 3.7V/3.85V Li-ion / Ni-MH / Ni-Cd
Aliexpress
There’re some similar (or not) items on Aliexpress
| Image | Product (link) | Price | Coupons |
|---|---|---|---|
 |
Klarus K1 Charger for Flashlight Battery, Fits for 26650/22650/18650/18490/17670/17500/16340/14500/10440, Etc | $19.99 | – |
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 are no active coupons for this product, but the price is pretty low isn’t it?
Link: Banggood product page
Price: $-3
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGAlerabat15, BGtorch7, BG7a539e, FIN9774, BGtorch2, BGAlerabatI, BGOutlight10
(you can check these old coupons out, but these probably won’t work)
Price history and price alert
Do you need price history chart (for all/most countries) for KLARUS K1 Battery Charger? There we go.
Price records source(s): 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)).