Macbook Pro Battery life issue - Help needed!

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hello,

own mid-2009 15'' macbook pro.
"upgraded" hard-drive seagate momentus xt 750gb.

of may know (i got find out recently), seagate hybrid hard drives have compatibility issue macbooks. overheat computer, , notably cut down battery life more half.

battery life before switching hdd @ 7,5hours. after, 3 hours.

figured out problem hdd itself, removed , put normal wd 5400rpm one.

expecting battery life go normal, surprise it's still @ 3hours when full, while going 3,5 - 4 hours coming down again.

battery permanently damaged??

appreciated.
 

are still using mid 2009 battery? 3 hours isn't terrible. don't know, maybe overheated it, 3 hours 2009 battery isn't terrible.
 


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