$42.25 – 4pcs Astrolux C2150R Type-C Charging 21700 Battery 5000mAh 3.7V (Banggood, Aliexpress: Astrolux® C2150R Type-C Charging Port 21700 Battery 5000mAh 3.7V Rechargeable Li-ion Cell Pointed-top Deep Cycles High Drain Batteries For Flashlights RC Toys Home Tools – 4 Pcs (the best price with coupon)).
When I was updating this page the price was $42.25 for 4pcs Astrolux C2150R Type-C Charging 21700 Battery 5000mAh 3.7V (in Banggood). Price history, coupons and price alert are available on this page. Do you want to know what the best price is?
Latest price update (UTC time):
Banggood ($42.25)
Banggood warehouse is located in China. I can’t find any active coupons for this product in Banggood. But wait a sec… Is it a good price? Hmmm, price is higher than average (which is $38.34 right now), so better set price alert down below…
Link: Banggood product page
Price: $42.25
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/i1u
Old coupons (from the oldest to the newest): BGCMP341
(system checks these coupons on every price check (like once per 24 hours), but you can check them out anyway)
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
Check out price history chart (for all/most countries) for 4pcs Astrolux C2150R Type-C Charging 21700 Battery 5000mAh 3.7V. The lowest price was: $37.99.
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)).