Aliexpress
There’re some similar items on Aliexpress in my database. There may be some other items though.
| Image | Product (link) | Price | Coupons |
|---|---|---|---|
 |
TATTU 850mAh 14.8V 4S 75C RC Battery | 0.00 USD | – |
 |
Tattu R-Line 1.0 850mAh 4S RC Battery 14.8V 95C | 0.00 USD | – |
 |
3Pcs CNHL 4S 14.8V RC Battery 850mAh 70C XT60 | 0.00 USD | – |
More on Aliexpress…Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
Coupon (7.70 USD): BGdaf61e
Coupon (10.99 USD): BG83f1d4
Coupon (20.23 USD): BGMatt2022
(CouponsFromChina.com tip: coupon code has to be applied in shop’s cart after clicking “Proceed to checkout”. Click to copy code and open shop)
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): BGToys8
(probably won’t work, but you can try them out)
Price history and price alert
Here is price history (for all/most countries) for 14.8V 850mAh XT60 25C 4S RC Battery.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).