$14.94 – Capacity: 1800mAh, Color: As Shown, Brand: ZOP Power, Plug: T Deans Plug, Weight: Approx 105.2g, Name: 7.4V 1800mAh 100C 2S LiPo Battery.
ZOP Power 7.4V 1800mAh 100C 2S RC Battery T Deans is for $14.94 (in Banggood). You can create price alert here, copy coupons and view price history. Let’s see what best price is ATM.
Latest price update (UTC time):
Banggood ($14.94)
Banggood warehouse is located in China. I don’t think there is an active coupon right now – at least in my database. Is it good price? Well, this price is higher than average price ($13.22)
Link: Banggood product page
Price: $14.94
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): BGToys8, BGMatt2022, BG589b2e
(you can check these old coupons out, but these probably won’t work)
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
Here is price history (for all/most countries) for ZOP Power 7.4V 1800mAh 100C 2S RC Battery T Deans. The lowest price was: $10.99.
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)).