MacBook Pro 15 - Unibody early 2011 -- Acting strange on start-up. Display dim, then brightens. Battery icon reads "Replace Now." Just want to ensure that the bad battery could cause this, not some other issue.
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If it says REPLACE NOW do as your told and replace it. The battery is bad. Especially after 6 years of use, they degrade and lower capacity until they are completely dead.
http://www.coconut-flavour.com/coconutba...
You can confirm it using coconut battery. If it tells you it needs to be replaced, replace it.
MacBook Pro 15" Unibody Early 2011 Battery Replacement
Thats how to do it.
MacBook Pro 15" Unibody (Early 2011-Mid 2012) Battery
Thats the battery. A-stock is about 30 dollars cheaper and it also is still a great battery for a macbook of this age. Its not really worth getting the new one.
Hope my answer answered your question! If it was please hit the accept answer button!
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Wow! You did take time to give a complete answer ;-) Congratulations.
@mayer I know. I was pretty proud of it too.
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