Basically copy coupon, view price history or create e-mail price alert. Do you want to know what the best price is?
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest price update (UTC time):
Capacity (mAh): 3120mAh, Voltage(V): 3.6V, Max. Discharge Current: 30A
Price history and price alert
Price history (for all/most countries) for 8x US18650VTC6 3120mAh 30A 18650 Battery is here.
Price records source(s): Gearbest
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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)).