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my MacBook Pro gets really hot while using it. I bought it from a friend. does it mean the battery has been changed ? and I also can't see the battery health life percentage
Perform a clean install of macOS by erasing the whole physical SSD before reinstalling macOS. Who knows what condition macOS is in or what third party apps may be at play here or any system settings or modifications the previous owner may have configured.
The battery is unlikely to cause heating problems....if anything when there are power issues many times the CPU will be only running at idle speeds producing little to no heat.
Try running the Apple Diagnostics to see if any hardware issues are detected. If a third party battery is installed, then any battery errors reported by the diagnostics are meaningless unless you know for certain they diagnostics passed when the third party battery was first installed.
You can also try an SMC Reset.
FYI, here is what the previous owner should have done before selling the laptop:
What to do before you sell, give away, trade in, or recycle your Mac - Apple Support
Also, third party software such as anti-virus apps, cleaning/optimizer apps, and third party security software are the usual culprits for a computer running hot because they make the computer work harder even when the computer appears to be sitting there idle. Other third party apps such as file sharing & bittorrent apps will also cause a computer to work hard & heat up. Of course other apps & configurations could cause similar problems.
If the fans are running at high speed, it does not necessarily mean the laptop is running hot since the fans can run at high speed if any of the temperature sensors is not communicating properly.
Perform a clean install of macOS by erasing the whole physical SSD before reinstalling macOS. Who knows what condition macOS is in or what third party apps may be at play here or any system settings or modifications the previous owner may have configured.
The battery is unlikely to cause heating problems....if anything when there are power issues many times the CPU will be only running at idle speeds producing little to no heat.
Try running the Apple Diagnostics to see if any hardware issues are detected. If a third party battery is installed, then any battery errors reported by the diagnostics are meaningless unless you know for certain they diagnostics passed when the third party battery was first installed.
You can also try an SMC Reset.
FYI, here is what the previous owner should have done before selling the laptop:
What to do before you sell, give away, trade in, or recycle your Mac - Apple Support
Also, third party software such as anti-virus apps, cleaning/optimizer apps, and third party security software are the usual culprits for a computer running hot because they make the computer work harder even when the computer appears to be sitting there idle. Other third party apps such as file sharing & bittorrent apps will also cause a computer to work hard & heat up. Of course other apps & configurations could cause similar problems.
If the fans are running at high speed, it does not necessarily mean the laptop is running hot since the fans can run at high speed if any of the temperature sensors is not communicating properly.
Not necessarily but maybe ... I doubt it though as battery is an all or nothing sort of thing.
What is the percentage?
All small thin notebooks heat up because cooling is not all that good. Not bad necessarily, just not the best. Aesthetics you know. It will get hotter as it works harder or for extended periods of time. What all are you doing with it when it heats up? Does it have a case that restricting air flow? Do the vents looked clogged or "linty"?
The vents look okay to me. I can't view the battery health percentage that's why I think the battery has been changed. and the only I did it with today when I bought it was log in my iCloud and also use the browser for a while. And when I click on any button after turning off the MacBook comes on automatically without pushing the power button which I suppose is the fingerprint button
my MacBook Pro gets really hot while using it. I bought it from a friend. does it mean the battery has been changed ? and I also can't see the battery health life percentage
