$65.54 – JUNCTEK Bluetooth Battery Monitor KH110F KH140F KH160F Voltage And Current Tester Capacity Indicator VA Battery Gauge.
According to my DB the lowest price is $65.54 for JUNCTEK KH160F Bluetooth Battery Monitor (in Banggood). Just check coupons out (with price alert and history). Let’s see what best price is ATM.
Latest coupon code price check (UTC time):
Banggood ($65.54)
Banggood warehouse is located in China. But wait a sec… Is it a good price? From what I can see this price is higher than average price ($59.41). Only one coupon available!
Link: Banggood product page
Price without coupon: $65.99
1. ($65.54): BGMAI666
apply it in your 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/i1u
Old coupons (from the oldest to the newest): BGTOOS729, BG8FORMULAMX
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
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
Price history (for all/most countries) for JUNCTEK KH160F Bluetooth Battery Monitor is here. The lowest price was: $57.99.
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)).