White Macbook Random Shutdown on Battery Power?

[Mode7girl]

Ok, at first I had this strange problem where my Macbook would charge up the battery and show it at 100% in the menu icon in OS X and the battery would also light up all the LEDs when you checked the power on it. Only thing was the second you unplugged it, the Macbook would power off. You could try to restart it and power it back on with battery power and it would maybe spin the hard drive and the screen would blink on for about a second before going dead.

I sent it in and Apple fixed it to where the battery seemed to work fine. Now it seems it will randomly cut off while on battery power every once in a while. It has done so three times so far all with at least 45 minutes of battery power left on the icon in OS X. It has never turned off on AC power, only on the battery.

Any idea if I should check with Apple again to get it repaired or could this be some kind of software issue?

 

[Transeau]

can you boot the diagnostics and see if it still happens?
(Put in Mac OS X DVD 1, reboot and hold the "D" at the chime)

 

[SRSound]

hey, i know this was a while ago but my powerbook (12" rev D) just started having the same exact problem! My battery will also occassionally jump from around 50% directly to 0% without warning. Any resolution??

 

[mad jew]

SRSound, have you re-seated the battery, re-calibrarted it and reset your PMU? If these techniques don't help then it might be time for a new battery.

 

[SRSound]

SRSound, have you re-seated the battery, re-calibrarted it and reset your PMU? If these techniques don't help then it might be time for a new battery.

I've tried all but resetting the PMU - trying that now! THANKS! But... if it is unsuccessful, how does one go about getting a new battery?

 

[mad jew]

Just call up Apple Support or head to your local Store/reseller.

 

[huy]

I have the exact same problem. Cuts out with around 30 minutes of juice left on battery.

Reset PMU did nothing. Sucks majorly. I have also reseated the battery and TRIED to calibrate but each time I go from 100% to around 20%, it cuts out! No low batt. warning either.

 

[mad jew]

huy, is this a MacBook with the latest firmware and updates installed?

 

[huy]

Yes it is. Sorry I failed to mention that. All the SMC firmware updates are installed, latest 10.4.8 OS X.

I think it is my battery and I will need a replacement.

 

[Mode7girl]

Update:

I just decided to call up Apple and had it sent in again. I got the repair sheet back and I think they replaced everything on it almost. They also installed a new palm rest (goodbye yellowing palm rest). Anyway, seems to work fine now.