Cell dimension: 64.85 ± 0.15mm(H)X18.33 ± 0.07mm(D), Nominal discharge capacity: 3000mAh, Discharge cut-off voltage: 2.5V, Model: 18650, Nominal voltage: 3.6V, 100mA cut-off, Charging time: Standard charge: 180 min / 1500mA Rapid charge: 60 min / 4A, Product Name: INR18650-30Q 3000mAh Unprotected Button Top, Charging mode: CC-CV, Cell weight: 48.0g, 4.20 ± 0.05 V, Max. continuous discharge: 20A, Discharge: 2.5V.
Check coupons or create price alert down below. Let’s see what best price is ATM.
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.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China. Well, there is one coupon available right now.
Link: Banggood product page
1. ($21.48): BANGGOODSD
apply code in your basket (cart) after clicking “Proceed to checkout”. Click to copy code and open shop.
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): BCNLXK, BGAFF10OFF, BgcLuBofErtA10, BGFLS15, BGTORCH, 4BLF, BG10OFFAFF, BGwhielabel, BG10OFFAFF1, BGFLBA
(there’s a little possibility that old coupon will work)
Price history and price alert
Here is price history (for all/most countries) for INR18650-30Q 3000mAh Unprotected Button Top 18650 Battery. The lowest price was: $6.95.
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)).