2011 MacBook pro with new battery discharges in sleep mode in 60 minutes

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2011 MacBook pro with new battery discharges in sleep mode in 60 minutes

I have recently had my 2011 13" MacBook Pro battery replaced, and now, intermittently (about 1 out of 15~20 times) when I close the lid (putting it into sleep mode) the battery is fully discharged when I open it about 1 hour later? And it only starts charging when plugged in - it won't even switch on if it is not connected to a power source - but then it goest to 100% charged in about 20 minutes. The other times when I close the lid to travel, usually at about 90+% charged, it resumes exactly at that point (almost fully charged) when I open the lid 1, or even 2 or 3 hours later. Also, when this happens, and during the approximately 20 minutes it takes to go to a full charge, the machine is very slow. Any ideas / advice? Thanks in advance, JM.

MacBook Pro (13-inch Early 2011), OS X Yosemite (10.10.2)

Posted on Feb 28, 2015 9:34 AM

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Answer 1

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my ginger

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Feb 28, 2015 9:41 AM in response to johanmvanzyl

Hi. You could try a SMC reset. http://support.apple.com/en-us/HT201295 If this does not help, you may have a defective battery..Where did you buy this battery from? Did it come from the apple store?

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Answer 2

johanmvanzyl Author

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Feb 28, 2015 10:01 AM in response to my ginger

Thanks, My Ginger - I have just done a SMC reset, and will see if this makes a differences.

No, I am afraid it is a generic battery from a 3rd party Mac service centre in Cape Town.

I do hope this works!

Thanks,

Johan

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Answer 3

my ginger

Level 5

4,904 points

Feb 28, 2015 10:13 AM in response to johanmvanzyl

Hi. Macbook batteries have a memory in them that tells the charging system the health, charge rate and cycle count as well as voltage ,amps and such. So you can go to about this mac/systems/power and get that info. It takes longer than 20 minutes to charge a fully depleted battery unless some of the cels are bad.You can also use the option key while clicking on the battery icon to see battery health.

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