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When the fans go into overdrive, open Activity Monitor and sort by CPU usage to see if one program is gobbling all your processor cycles.
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When the fans go into overdrive, open Activity Monitor and sort by CPU usage to see if one program is gobbling all your processor cycles.

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Thanks a lot. &nbsp;I am going to purchase a new Macbook Pro!<br />
capreol
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Thanks a lot.  I am going to purchase a new Macbook Pro!
capreol

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I have a 4.5 year old Macbook Pro. &nbsp;2 months ago I changed the battery to a brand new battery. &nbsp;I am still having a problem. &nbsp;After about 1 hour it goes down to 39% charge remaining and the laptop goes into overdrive at that point in terms of the fan and the heat generated at the bottom of the laptop enclosure and then the energy depletes at a fairly rapid rate from that point on. The bottom of the laptop is getting fairly hot. &nbsp;This is not normal. &nbsp;What do you think is the problem and how might I solve it? &nbsp;Should I just get rid of the laptop and buy a new one?<br />
<br />
I had this same problem before I purchased the new battery.\<br />
Thanks.<br />
capreol
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I have a 4.5 year old Macbook Pro.  2 months ago I changed the battery to a brand new battery.  I am still having a problem.  After about 1 hour it goes down to 39% charge remaining and the laptop goes into overdrive at that point in terms of the fan and the heat generated at the bottom of the laptop enclosure and then the energy depletes at a fairly rapid rate from that point on. The bottom of the laptop is getting fairly hot.  This is not normal.  What do you think is the problem and how might I solve it?  Should I just get rid of the laptop and buy a new one?

I had this same problem before I purchased the new battery.\
Thanks.
capreol

Mac Laptop and the battery?

Apple's early computers ran on a variety of operating systems, including a Pascal version and one based on CP/M, before releasing its ProDOS with the advent of its 16-bit computer. With the release of the Lisa, which had its own OS, Apple and computing entered the graphical age; it was followed by the Macintosh, which offered a series of "System" operating systems. Other Mac operating systems included PowerPC until Apple acquired NeXT and folded it into the Mac OS. Current operating systems for Apple devices are Mac OS-X and iOS.

Apple OS

Mac OS X is the desktop operating system from Apple Inc., found on Macintosh computers. OS X consists of a Mach/BSD-based kernel, operating system interfaces primarily based on FreeBSD and additional frameworks (written in C, C++ and Objective-C providing user interface and application-level services.