Just check coupons out (with price alert and history). What is best price?
Lilon(1-8S)/NiMH/Cd(1-10S), Support USB charging: QC 2.0/3.0, Power meter output current: 0-60A, Voltage measurement accuracy: ±0.005V@4.2V/4.35V, Input voltage: 2-8S Battery/6.0-36V, Suppport smart battery: Charging and discharging setting, USB charger Input voltage: Max.32V, Balancing cells accurancy: 〈0.005V, Balance meter cells: 1-8S, Weight: 69g, Power meter current measurement accuracy: ±0.01A, Dimension: 76x 64x 25mm, Max. output 12V/2A, USB output voltage: QC3.0, Power meter output max. power: 2160Watt, Supported Batt.Type: LiHv(1-8S)/LiPo(1-8S)/LiFe(1-8S), Display: 1.8//color LCD
Aliexpress
I could not find it on Aliexpress. Click here to search by yourself.
Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($19.79): BGHONEY2110
2. ($20.23): BGDAVIS
3. ($20.99): 13f142
just apply this code 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/5cd
Old coupons (from the oldest to the newest): BG10BC, BGAFF10OFF, bGhOnEy10, BGBC1, BGdragonBoat, BGRCBC7, BGSS10%SW, bgshOOp10, BGRC902, BgoFErTaSchInA10, BgcLuBofErtA10, BGCuponation10, BGBCSpring1
(there’s a little possibility that old coupon will work)
Price history and price alert
Do you need price history chart (for all/most countries) for Rcharlance M8Pro 2-8S RC Battery Charger? There we go.
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)).