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Which battery shall I replace?

My macbook pro model is A1278 (13 inch, early 2011). The battery condition is shown as "replace now". And there are a few more symptoms:


1. When connected to power, it automatically starts up.

2, After start up, time is reset to Dec.31, 2000.

3. Super slow in all operations.


I wonder if it's caused by a dead PRAM battery or just the commonly referred battery?


Thanks in advance!

MacBook Pro (13-inch Early 2011), OS X Mountain Lion (10.8.5), null

Posted on Mar 31, 2015 10:02 PM

Reply
1 reply

Mar 31, 2015 11:11 PM in response to wolfustc

"1. When connected to power, it automatically starts up."

Once you get a new battery in there reset SMC:

Reset SMC

http://support.apple.com/en-us/HT201295


" After start up, time is reset to Dec.31, 2000."

No PRAM battery in these machines. Replace your battery with one from OWC:

http://eshop.macsales.com/item/NewerTech/BAP13MBU65V/


"3. Super slow in all operations."

How much RAM? Think about putting in an SSD from OWC.

Here's my early 2011 13" MBP w/ 8 GB of RAM and a 120 GB SSD running Mavericks (10.9.5).

Startup

http://tinyurl.com/ooe6sac


Photoshop CS 6 open job:


http://tinyurl.com/nsussol

Which battery shall I replace?

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