MacBook Pro 2013 non retina device has a defective battery which outputs only 7.3 volts. The Macbook cannot run only on the battery - it requires the AC power adapter to be plugged in to power the device.
The battery used to provide 11.1 volts but there may be fault in cells or BMS circuit which is causing it to output only 7.3 volts.
The battery gets charged normally but I don’t know if any power is consumed from the battery by the MacBook.
It’s similar to using Macbook without battery, but Macbook cpu speeds are down when only used with AC adapter. But I notice no cpu throttle when used with 7.3v battery and AC adapter.
I have also observed Frequent short freeze while working with apps.
Is it safe to use the Macbook with combination of defective battery (7.3v)and AC adapter?