Chosen Solution

Hi, I did this exact repair, with the suggested linked battery. I have calibrated the battery multiple times. But it still drain within an hour. In fact I think the old battery I replaced held a charge longer than the new one. Is it the new OS? or something else I should be checking with the computer?

Download coconut battery. You’ve likely got some old stock thing with a 5000mah lipo instead of 7200mah