Has anyone used a cell reader like this....opinions??

[Dacflyer]

I been looking for a tester to confirm that I wired up BMS correctly before actually plugging it into BMS.
I been using a 8S tester, but it's a little janky to use on a 14s connector. I had to keep sliding it over and over.
So I decided to find something better and i came across this item I saw on Aliexpress.
https://www.aliexpress.com/item/1005001576169671.html
It looks pretty intuitive. And if miswired, it can read ( 2 different versions ) 9v or up to 25v per connection. But if you got it right, each connection will read 3.7 or what ever your cell voltage is..
I'm wondering if it's as good as it looks.. It's really not too cheap..
So I'm looking for opinions before i order it..
Thanks..

 

[MisterSandals]

I'm wondering if it's as good as it looks.. It's really not too cheap..
So I'm looking for opinions before i order it..

You don't need a special meter to check the balance wires.

If you use a simple digital volt meter, you can perform the test in about 30 seconds.
Pin 1 is your negative so the voltage from pin 1 to pin 2 should be about 3.2V.

Pin 1 to pin 2 about 6.4V
Pin 1 to pin 3 about 9.6V
Pin 1 to pin 4 about 12.8V

keep incrementing by about 3.2V (or whatever your cell voltage are) thru all 14 of your cells (pins 2 - 15).

 

[Dacflyer]

sorry for late reply..( some reason i don't get notifications )
Yes, i know how to test manually, I also have a 8S volt tester, But I kinda like gadgets sometimes. Plus my connectors aren't easy to make contact with, and something to test 12S all at once would be neat. Especially before connecting the BMS..