Mobile Phone Charging Tester Capacity Meter Voltmeter Ammeter LCD Display

Do you think it can be helpfull?

Is the fact that the battery goes to full charge meaning the battery is good ? I dont see some Lead test. The battery can rise to the ah written on it but it can goes to Null quickly?

Thanks...

 

Your link doesn't work.

 

It will be of some help if your link is working.

 

https://www.aliexpress.com/item/Mob...32779005513.html?spm=2114.13010608.0.0.EyrzNU

 

Why do need to know what voltage and current the battery is taking, if it's working leave it alone, if it's not, replace it...