You can get Folomov USB Battery Charger for $10.21 using coupon code (in Banggood). Price history, coupons and price alert are available on this page. Best price?
Max Discharging Current: 2A, Input: DC5V 2A, Output: DC5V 2A, Weight: 31g, Brand: Folomov, Max Charging Current: 2A, Size: 66mmx 37mmx 17mm
Latest price update (UTC time):
Banggood ($10.21)
Banggood warehouse is located in China. CouponsFromChina software could not find any coupon for this product in Banggood. Is it a reasonable price for this item? From what I can see this price is higher than average price ($9.52).
Link: Banggood product page
Price: $10.21
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGFLKC, linepayflt, EYBG, BGBSFV, BGTORCH, BGLKA
(probably won’t work, but you can try them out)
Aliexpress
There’re some similar (or not) items on Aliexpress
| Image | Product (link) | Price | Coupons |
|---|---|---|---|
 |
FOLOMOV USB Magnetic Charger For 21700 20700 18650 Li-ion Battery LED Power Indicator Keychain Chargers 5V 2A Output Power Bank | $12.20 | – |
Click here to search by yourself. Here are coupons that you can use.
Price history and price alert
Here is price history (for all/most countries) for Folomov USB 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)).