Latest update shows that ZOP Power 11.1V 8000mAh 35C 3S RC Battery T-Deans costs 47.99 USD (in Banggood). You can create price alert here, copy coupons and view price history. What is the best price?
Latest coupon code price check (UTC time):
Banggood (47.99 USD)
Banggood warehouse is located in China. There is no active coupon in my database right now (for Banggood). Is it a reasonable price for this item? Hmmm, price is higher than average (which is 26.93 USD right now), so better set price alert down below…
Link: Banggood product page
Price: 47.99 USD
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): BGMatt2022, BGToys8, BGGutscheine, BG8OFFCOUPON, TTBLACK5, BGZOP3S320, BG589b2e, BG8FORMULAMX
(you can check these old coupons out, but these probably won’t work)
Aliexpress
Here are coupons that you can use.
Price history and price alert
Here is price history (for all/most countries) for ZOP Power 11.1V 8000mAh 35C 3S RC Battery T-Deans.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).