Short background:
My laptop, a MBP 15' 2018, started having shut downs around 4 years ago. Basically, laptop could suddenly turn off even if battery was at reportedly ~40%. Similiar, I could close lid at 40-50% and when opening lid a couple of hours later, it would be dead.
I purchased a new 3rd party battery, this was around 3 years ago. The issue still persisted. I was like well I'm just gonna have to live with it. NVRAM and PRAM reset did nothing.
Yesterday I updated to macOS 15.5. I had been on 14 before. I sat at the computer doing quite heavy stuff. To my surprise I could do this until I was finished with work, and at that point battery reported like 8%. So I closed lid and put it on charge over the night. This morning I opened the lid, and as it turned out the charging cable had not been connected to power. But the laptop wasn't dead. 6% remaining.
This have me believe that perhaps the issue hasn't been the battery at all. Maybe there is something else that causes it to drain power. While I was pleased with this happening this particular night, I'm not holding my breath that macOS 15.5 has fixed it. It was probably pure luck. Now for the question I have in mind:
How do I investigate what process could be left on after closing lid and doing excessive draining? It could be anything, WiFi / Bluetooth doing aggressive lookups, or something in Activity Monitor, or something else entirely. How would I go about this?
I am a software dev and quite technical, have built hackintoshes with custom drivers etc. Spare no expense with tech-heavy suggestions, if you have them. Thank you all!
My laptop, a MBP 15' 2018, started having shut downs around 4 years ago. Basically, laptop could suddenly turn off even if battery was at reportedly ~40%. Similiar, I could close lid at 40-50% and when opening lid a couple of hours later, it would be dead.
I purchased a new 3rd party battery, this was around 3 years ago. The issue still persisted. I was like well I'm just gonna have to live with it. NVRAM and PRAM reset did nothing.
Yesterday I updated to macOS 15.5. I had been on 14 before. I sat at the computer doing quite heavy stuff. To my surprise I could do this until I was finished with work, and at that point battery reported like 8%. So I closed lid and put it on charge over the night. This morning I opened the lid, and as it turned out the charging cable had not been connected to power. But the laptop wasn't dead. 6% remaining.
This have me believe that perhaps the issue hasn't been the battery at all. Maybe there is something else that causes it to drain power. While I was pleased with this happening this particular night, I'm not holding my breath that macOS 15.5 has fixed it. It was probably pure luck. Now for the question I have in mind:
How do I investigate what process could be left on after closing lid and doing excessive draining? It could be anything, WiFi / Bluetooth doing aggressive lookups, or something in Activity Monitor, or something else entirely. How would I go about this?
I am a software dev and quite technical, have built hackintoshes with custom drivers etc. Spare no expense with tech-heavy suggestions, if you have them. Thank you all!
