Updated: 09-01-2026.
1x Basen 21700 30A 4000mah Battery
Banggood warehouse: China.
Discount price $11.87 with coupon: BG10OFFAFF1
Additional Banggood coupons:
1. First page
2. Second page
Aliexpress
I could not find it on Aliexpress. Click here to search by yourself.
Price history and price alert
Price history (for all/most countries) for 1x Basen 21700 30A 4000mah Battery is here. The lowest price was: $6.44.
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)).