Chosen Solution
Hey guyz how do I know if an old ipad mini 1 with 2.8v charged battery still good? The new battery reads 3.0v.in multimeter.
Depends, you’ll need to charge it for quite a while to turn it on 3.7V is minimal voltage to boot an iPad up and 4.1-4.4V is maximum charge voltage for battery. You can use 3Utools from 3u.com on a windows computer once you got the iPad on to check the battery health.
If you have a Mac, you can use Coconut battery to check out your battery by using your charging cable and plug into a USB port. It has an iOS feature that will check both iPhones and iPads. https://www.coconut-flavour.com/coconutb…
If the battery voltage drops below certain threshold, it will lock out and refuse any charge, this is a safety mechanism by design. However I’m not sure if 2.8 is the threshold or if there is anything else wrong with it.
Just download a app that will tell you the health of your battery you don’t need to manually test the battery. Just search up battery life in the AppStore
