$56.34 – ZOP Power 11.4V 9000mAh 100C 3S RC Battery T-Deans (Banggood, Aliexpress: Brand: ZOP Power, Name: 11.4V 9000mAh 100C 3S LiPo Battery, Plug: T Deans Plug, Weight: Approx 518.5g, Color: As Shown, Capacity: 9000mAh (the best price with coupon)).
$56.34 – that is current price with coupon for ZOP Power 11.4V 9000mAh 100C 3S RC Battery T-Deans (in Banggood). Price history, coupons and price alert are available on this page. You probably want to know what is the best price?
Latest coupon code price check (UTC time):
Banggood ($56.34)
Banggood warehouse is located in China. I’m afraid that there’s no working coupon in Banggood. What about the price? Hmmm, price is higher than average (which is $37.54 right now), so better set price alert down below…
Link: Banggood product page
Price: $56.34
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/feV
Old coupons (from the oldest to the newest): BGMatt2022, BGToys8, BGGutscheine, BG8OFFCOUPON, TTBLACK5, BG589b2e, BG8FORMULAMX, BG9efff9
(I don’t think these’re gonna work, but you can try ’em out anyway)
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
Click here to search by yourself. Here are coupons that you can use.
Price history and price alert
Do you need price history chart (for all/most countries) for ZOP Power 11.4V 9000mAh 100C 3S RC Battery T-Deans? There we go. The lowest price was: $29.99.
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)).