Aliexpress
Here are coupons that you can use.
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – Enusic BT01 6V 12V Battery Tester (-3 USD)
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in Europe 
. Hmmm… There is no active coupon in Banggood at this moment. Sorry, but there’s no price history in my database.
Link: Banggood product page
Price: -3 USD
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
There were country-specific coupon codes published on Couponsfromchina social channels and price alerts. Coupon price may vary by country, because there’re different VAT rates, shipping cost etc. There is a chance that some latest coupons are still working:
Old coupons (from the oldest to the newest): BGMO90, 7d18f7, BGMoMo2, BGAFF10OFF, BGMoMo5, BGCuponation10, BGS2279, 13f142, BGHONEY2110, BG10OFFAFF, BGwhielabel, BG10OFFAFF1, BG00c906, ADMITAD2212, 2022ACTIESNL, BGb66369
(there’s a little possibility that old coupon will work)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – Enusic BT01 6V 12V Battery Tester (-3 USD)
Price history and price alert
It’s a new item in our database, so I can’t create price history chart. We have saved this price in database: 39.99 USD.
You can set price alert (for Banggood).