Battery LED light randomly working, why?

Hi all,
I have read past discussions on this but felt like there was no up to date one and no real issue was resolved.
I have a Macbook Pro 15-in Early 2011. Lately the battery has been bipolar and basically works when it feels like it. It is not an outlet issue because sometimes it will decide to work on a certain outlet and than another time it will not.
I have cleaned the charger and the part of the computer where it plugs in as recommended on the boards but that does not seem to be involved with the issue.
I was going to contact Apple Support but it is no longer supported and I don't feel like paying for an answer you all may very well know.
Charger is in good shape, I don't know why it's suddenly acting like this.
Any ideas?

You state the charger is good. What testing have you done to confirm this? Plugged the "good charger" into a different Mac and confirm it charges the other Mac w/o problems? Or maybe used a different charger with the problem Mac and it has the same issue?
Either way would be acceptable for testing/confirming that indeed your charger is good. Not being critical, just thorough.

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Hi,
I just purchased my macbook 2 weeks ago. The battery was perfectly fine on the first 2 week. After fully charge, led light turn from amber to green as what it suppose to be.
But since today, when I plug in my charger to my laptop, the led light wasn't on at all but based on the battery icon shown on mylaptop, it is charging slowly.
I tried to unplug the charger and replug it in again. It turns to green ( while the icon shown 60%) and 3 sec later, the light off again.
unplug-replug again, it turns to amber, a few sec the light turns off again. and it just keep on and off.
I am a bit confused. I rang up apple helpline, they suggested me to reset the PRAM which seems work.
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This is a quote from the page I bookmarked for you to read. "The System Management Controller is an integrated circuit (computer chip) that is on the logic board of the MacBook or MacBook Pro. As the name implies, it is responsible for power management of the computer. It controls backlighting, hard disk spin down, sleep and wake, some charging aspects, trackpad control, and some input/output as it relates to the computer sleeping."
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If the battery fall below 96% it will start a charge cycle. Have you callibrated the battery.
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Nore wrote:
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thanks for the suggestions, i tried the ideas you suggested but i dont even get a camera showing for the rear camera, i also noticed the torchlight no longer works. i did all the steps but no luck.
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Estellesol wrote:
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Battery LED light randomly working, why?

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