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Unusual behaviour help

I

ILickYu

macrumors newbie
Original poster
May 29, 2013
2
0
hello,

I weird symptoms with my macBook pro 13in 2009.

about a year ago my battery died. I bought a replacement battery (non-original) and replaced it.

It worked great for a few months. After a few months I started experiencing the following symptoms:
* battery power sometimes shows 0%, usually goes back to its actual % in a few minutes - computer works fine.
* sometimes the machine just goes in to sleep mode randomly while the battery is charged - about every 3 days (heavy use).
* when I shut the screen and want to turn it back on I usually need to hit the power button (not always) and then the computer takes more time to wake up.
* Also, sometimes after shutting the screen hitting the power button does not wake it up. I need to plug it into a charger, hit the power button, and then I can disconnect it immediately.

I am currently using mountain lion. However, I tried going back to an old lion backup, which worked fine in the past (with this battery) - did not fix the problem.

Is the problem the battery?

It is also important to mention that this laptop got hit a couple of time so it might have something physically broken or not properly connected inside.
Also, the screen is a little loose.

Thank you for all the helpers.
 
Last edited:
Of course, if there's damage, all bets are off. It sounds like at least some of your issues may be caused by the battery. Did you buy an Apple battery, or did you get a third-party battery? I wouldn't trust or recommend any non-Apple battery, due to the number of problems reported with "knockoff" batteries. Also, there is no assurance that knockoff batteries have the same charging technology that Apple uses, involving the battery, the MagSafe adapter and the Mac's logic board.
The link below should answer most, if not all, of your battery/charging questions. If you haven't already done so, I highly recommend you take the time to read it.
For battery, power, or charging issues, you might try resetting the SMC.
(PRAM/NVRAM has nothing to do with these issues. Resetting it will not help.)
 
the battery is 3rd-party, however it worked fine for a few months.

I have tried resetting SMC. Is there anyway I could figure out if it is the battery or other internal damage?
 
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