When I was updating this page the price was $6.94 for BMAX 4 Slot Battery Charger (in Banggood). Get coupons, create price alert or check price history out! Best price?
Output voltage DC 4.2V 600mAx 4, Input voltage AC 110-240V 50/60Hz, Plug EU plug, Size 125x 92x 30mm
Latest coupon and price update (UTC):
Banggood ($6.94)
Banggood warehouse is located in China. I have no active coupons for you right now. Is it cheap? Pretty sweet, this is the lowest price I have ever noted for this product!
Link: Banggood product page
Price: $6.94
This is the best price ever noted in my database!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BgcLuBofErtA10, BGFLS15, 4BLF, BGAFF10OFF, BGHONEY2110, BG10OFFAFF, BGwhielabel, BG10OFFAFF1, BANGGOODSD, 6GSGIT, BGTorch4, 00c906, BGtorch2, BGtorch3, BGAlerabat15, BGtorch7, BGAlerabatI, BGtorch9, BG8Alerabat, BGLED07, BGOutlight10, BG204085, BG589b2e, BGd57765
(you can check these old coupons out, but these probably won’t work)
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Price history and price alert
Price history (for all/most countries) for BMAX 4 Slot Battery Charger 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)).