Just check coupons out (with price alert and history). Best price?
Capacity: 2200mAh, Colors: As Shown, Discharge Rate: 20C, Size: 10x3x2cm, Name: ZOP Power 11.1V 2200mAh 3S 20C Lipo Battery, Weight: Approx 195g
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 code price check (UTC time):
Banggood
Banggood warehouse is located in China. I don’t think there is an active coupon right now – at least in my database.
Link: Banggood product page
Price: $-3
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): 8wEbgaInS5, pROMo8cuPoN, BG8RCToy, BGToys1, BGRCT10, BGJUNEGSG9, BGRCParts8, Cuponation9, BGMatt2022, BGToys8, BG589b2e
(probably won’t work, but you can try them out)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – ZOP Power 11.1V 2200mAh 3S 20C RC Battery XT60 [EU] ($-3)
Price history and price alert
Here is price history (for all/most countries) for ZOP Power 11.1V 2200mAh 3S 20C RC Battery XT60.
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)).