Price history, coupons and price alert are available on this page. Best price?
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):
4450mAh(manufacturer rated), 3.7V, Max.Discharge Voltage: 13.0A
Banggood
Banggood warehouse is located in China. Only one coupon available!
Link: Banggood product page
1. ($9.14): AC18
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 and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): 6e5463, 6335CK, CMB3
(these coupons are old, so probably won’t work)
Price history and price alert
Price history (for all/most countries) for 26650 KeepPower 4500mAh Protected Battery is here.
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)).