$37.99 – JUNCTEK Battery Monitor Bluetooth KL-F DC 0-120V 0-600A Battery Tester Voltage Current VA Meter Battery Coulomb Meter Capacity Indicator – KL-140F.
The coupon price for JUNCTEK Battery Monitor Bluetooth KL-140F DC 0-120V 0-400A Battery Tester is $37.99 (in Banggood). Get coupons, create price alert or check price history out! Do you want to know what the best price is?
Latest coupon and price update (UTC):
Banggood ($37.99)
Banggood warehouse is located in China. I’m afraid that there’s no working coupon in Banggood. Is it cheap? I have never seen better price than the current one in CouponsFromChina database, so it’s the best!
Link: Banggood product page
Price: $37.99
Additional Banggood coupons: first page and second page
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
Do you need price history chart (for all/most countries) for JUNCTEK Battery Monitor Bluetooth KL-140F DC 0-120V 0-400A Battery Tester? There we go. 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)).