Basically copy coupon, view price history or create e-mail price alert. Do you want to know what the best price is?
Size: 36*37*75mm, Plug: XT60 Plug, Weight: 531g, Capacity: 1300mAh, Continuous Discharge Rate: 120C, Colors: Standard Colors
Aliexpress
I could not find it 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. One coupon is available. Cool!
Link: Banggood product page
1. ($42.29): BGAFF10OFF
paste coupon code in your cart and click Apply 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
Old coupons (from the oldest to the newest): BGBatteryAU, bGhOnEy10, BgcLuBofErtA10
(system checks these coupons on every price check (like once per 24 hours), but you can check them out anyway)
Price history and price alert
Price history (for all/most countries) for AHTECH Infinity RS Force V2 22.2V 1300mAh 120C 6S RC Battery is here.
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)).