Chosen Solution
I have recently received a USB test meter. I was just wondering is there anybody out there who can explain to me what can I find out using a one of these also one day someone mentioned the Ohm settings can be used to tell battery health. Just looking for some help on understanding the meter.
The USB AMP meter used on an iPhone is really only good for knowing if the phone is charging or not. You can get an idea of the battery charge by the amount of amps it is drawing. I think there would be too many variables to determine the true battery health. When using a battery tester the battery connector goes straight on the PC board and reads information directly. When using a USB AMP meter it goes through a charging cable, into the charging port than through the charging circuit on the logic board. On a good battery and logic board you may be able to tell the health but if you determined the battery heath was way down using your AMP meter it could also be a faulty cable, charging dock, gas gauge circuit or one of the charging IC’s.
I use mine to test charge ports and whether or not a device has any kind of life if they arrive and don’t seem to be working. If you wanna test batteries, especially iPhone batteries, you could get either 3UTools if you’re on windows or coconut battery if you’re on Mac. But in order to get a battery health reading, the device will need to be booted up and you’ll need to enter in the passcode.
