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Question: Bulging battery on MacBook Pro

The battery in my MacBook Pro has a massive bulge of 5mm height of 1/3 of the surface. The battery is about 8" by 2.5", and can be divided in 3 zones as seen in the photograph: on the right, a 3.5x2.5 zone that is OK, then a 2.5x2.5 central zone grossly bulged and at the left a 2x2.5 OK zone. The central zone applies great pressure on the trackpad, failing the clicking, and distorting the bottom of the unit. I believe that the Li ion Polymer battery -though still keeping charge- is very dangerous, even more though that the bulge cannot be detected from the outside; the telltales of the dangerous battery are [1] the failure of the left click of the trackpad [2] the slight distortion of the bottom. Did Apple issued a warning to look for telltales of failure? Was the battery recalled ?

Unit: MacBook Pro 13.3' A1278 2x2.4 Core 2 Duo/DDR3-4GB/SATA250GB

Picture: battery folded over to show the massive bulge lining up with the left click area of the track pad; when in position, the bulge applies great pressure on the pad.

Battery: User uploaded fileA1322 Li Ion Polymer 10.95V 63.5Wh

MacBook Pro, OS X 10.9.5 Mavericks

Posted on Jan 29, 2017 10:42 PM

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Answer:

Since you work in a school, In the US, contact educational support for advice:

Education customers
Support: 1-800-800-2775
Sales: 1-800-780-5009


There may be solutions for your school that are not available to the general public. If not, there still should be knowledgeable people there who can advise you about what to do.

Posted on Feb 13, 2017 12:32 PM

Jan 29, 2017 11:58 PM in response to it2apple In response to it2apple

heyy


Yeah... this happens after a number of cycles.... or there was something wrong with the charging...

I should replace the battery.. buy a new one and install it by yourself or you bring it to an apple store to let It be repaired bij apple repair service..

good luck

-dennis rodenburg

Jan 29, 2017 11:58 PM

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Feb 3, 2017 10:58 AM in response to it2apple In response to it2apple

Update: the bulged battery was shown by the OS as healthy, holding 95% charge (2892 out of 3040) with 846 cycles. The only indication that something was wrong came first from the trackpad (left click not working) then a slight bulge at the bottom of the unibody.

Following the forum advice, I have removed the battery. Both trackpad clicks are working again. The interesting part is that the battery keeps expanding rapidly, though it is now outside the MacBook Pro and no longer connected to any power source . The bulge is now 15mm on the top (from 5mm a week ago) and 5 mm on the bottom where the label A1322 is. The innards are showing through two gaps, one 50mm by 10mm and the other 40mm by 4mm. I am taking time lapse pictures for an interesting video.

MacBook Pro A1278 2x2.4Core2duo/RAM4GB/SATA250GB/upgraded to 10.12.3Sierra

Battery A1322 Li Ion Polymer 10.95V 63.5Wh

Pictures: screenshot of Apple BAttery Information, Bulge on bottom of battery with label, gap showing the battery guts

User uploaded fileUser uploaded fileUser uploaded file

Feb 3, 2017 10:58 AM

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Feb 3, 2017 11:17 AM in response to it2apple In response to it2apple

Lithium metal is flammable when exposed to air. You should take that Battery to your Apple dealer for proper disposal.


In Desktop Macs, large capacitors are used to smooth out the DC power supplied to the chips. In a battery-containing Mac, the battery is used as a buffer against power spikes and valleys. Your Mac should not be operated on a regular basis without a battery in place. With no battery to cushion power surges, you Mac could be damaged by random power events.

Feb 3, 2017 11:17 AM

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Feb 12, 2017 11:18 PM in response to it2apple In response to it2apple

The A 1322 continue to expand (outside the A 1278, and not connected to any power) at a fast rate and is now 26mm thick instead of the nominal 13.8mm I placed it in a ceramic box outside for safety with a glass top for view/camera. I found out that 30% of my unibodies have somehow swollen batteries, though not as severe as the 1st one pictured here.

Pictures: 1 week after photos of [1] gap, side 1 [2] gap, side 2 [3] nominal thickness [4] bulge thickness

User uploaded fileUser uploaded file

User uploaded file

User uploaded file

Feb 12, 2017 11:18 PM

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Question marked as Apple recommended

Feb 13, 2017 12:32 PM in response to it2apple In response to it2apple

Since you work in a school, In the US, contact educational support for advice:

Education customers
Support: 1-800-800-2775
Sales: 1-800-780-5009


There may be solutions for your school that are not available to the general public. If not, there still should be knowledgeable people there who can advise you about what to do.

Feb 13, 2017 12:32 PM

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Question: Bulging battery on MacBook Pro