PowerPC :: Battery Doesn't Charge On Powerbook G4?
Oct 26, 2010
Some days ago i finally added a Powerbook g4 to my Mac collection and since then ive been trying to fix this computer without any results. The Powerbook had the battery dead at first and i had to replace it with a new one i had. Now the problem/weird thing is that the computer detects the battery but it doesnt charge. It has about 18% of the charge and when i try to boot up all i hear is like a fan sound and nothing more, no boot up sound and no image on the screen.
If i boot up using the power cable thats when i see the 18% of the battery icon, but as soon as i take out the power cord, the image goes black although the computer still makes sounds as if it was on. Does it have any solution? PS: ive tried to reset the PMU,changed the pRam for a new one, reset the Nvram.
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Sep 7, 2007
I have a 1.67 GHz Powerbook G4. This morning it was fine. When I got home from work, it decided that it suddenly no longer wants to stay on when not plugged in. The battery is showing a full charge. The light on the plug is green. But the second I unplug the cord from the laptop, the entire thing shuts down.
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Mar 13, 2012
I got a Macbook pro 13" and the battery don't charge.
Info:MacBook Pro (13-inch Mid 2010), Mac OS X (10.7.3)
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May 3, 2012
Well, as the same title says, the battery of my macbook, when I'm charging it with the mac turned on, arrives to 99%, and when remaining 5 minutes, after this point, the time starts to increase, 6 minutes, 7 minutes, 10 minutes.... but doesn't charging at 100%.
Note: Cocconut Battery shows that the battery maximum capacity is at 88% with just 10 loadcycles !
Info:
Mac Pro
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Mar 30, 2012
Mba didn't power up when I had AC adapter plugged in. Finally,I got my mba charged after a restart.Do I need to take my mba to apple store?
Info:MacBook Air, Mac OS X (10.7), MC968
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Nov 15, 2006
I am leaving for a week long trip and many parts of it will not be able to run the computer off of the powercord, which is a problem because I get about 40mins of wordprocessing use out of it when I run the battery alone. Can someone explain what the significance of these levels are for my Powerbook G4 15'' (Alm) 1.25GHz, namely the cycle count and full charge/remaining capacity?
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Feb 7, 2007
My 1.67ghz, 15" high resolution, Powerbook seems to be broken. I use my laptop all day every day on battery power, and charge it through the night. Today, when I got home, it drew no charge from the adaptor. I have a backup iBook G3 which still charges perfectly off the same adapter, yet the Powerbook doesn't. I have left plugged in for about 45 minutes now, but still no charge, so the computer won't start up. I have a lot of important work on this computer, so I at least need some way of getting my data off it without ripping it apart to remove the HD. What should I do? I suspect that the power port in the laptop is somehow deformed, and thus is not making a connection. If this is the poblem, will it mean a new logic board?
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Jun 14, 2008
I have had my MacBook (aluminum) for 6 days, and all of a sudden i go to plug it in to charge (10% left) and the led on the magsafe doesn't come on and the computer doesn't recorgnize the charger (even in system profiler).
upon closer inspection i noticed the LED is on on the magsafe, it is just a very faint shade of green.I have tried a charger from a different MacBook but no luck. And i have also tried my charger and a different macbook and it charged it just fine.. so it's probably not my charger.
Any ideas?? i know i can go get it replaced.. but i would really like to not have to take a 45 minute drive to the apple store if i can avoid it.. (unless this problem is serious and should be replaced) also, if i get a replacement is it possible for them to just swap my HDD with the new one?
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Mar 14, 2007
My iBook G3 800 MHz will not charge any more all of a sudden. I have tried plugging it in to several power sockets and it won't charge. Whats more... I tried charging it with just the normal charger, and I even tried charing it with the extension wire! I am not sure if it is the charger, or my iBook. If it is the iBook, should i rip it open and get a new part for it? If it is the charger, where can i get a new one?
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Mar 14, 2009
I just tried to charge my iBook, and it won't charge. If I unplug the charger from the mains socket, and plug it back in, the ring around the charger will turn green for about a second and then turn off. I've tried to restart the iBook, and I've removed the battery from it also.
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Nov 3, 2006
for some reason my powerbook battery charge slowly goes down even while it's plugged in. The power light is green as if it's fully charged but it goes down about 1% every day and then if i unplug it and plug it back in then it starts to charge, goes up to 100% like it should and then starts all over again. It never used to do this so i don't know why it's doing it now.
It started happening around the time apple had that huge recall so then i got it replaced but it still does it so it can't be the batteries fault (at least it doesn't seem likely)
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Aug 3, 2007
I have a 1.33Ghz 12" powerbook and recently it has started to just shut off when the battery is saying it has around a half hour left, instead of it warning me that the battery is low and it will go to sleep soon. and then it won't restart until I plug it in. is there any way for me to fix this besides getting a new battery? This battery is not covered under any recalls, and there is no applecare left on the computer. also if it matters the computer is running 10.4.10.
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Sep 18, 2007
I just bought a 74w NewerTech battery about 3 weeks ago but I don't think that is the problem....
I can run my iBook off of the AC adapter fine but when I unplug it it automatically shuts off as if there is no battery in it.
It shows that the battery is charging and everything in the menubar but when I unplug it, it will shut off. This just happened today and earlier today I was working on it with the battery working fine.
I also switched out to the old stock battery and it does the same thing.
I think it has to be hardware related. I have reset the PMU and PRAM/NVRAM and it didn't help. Also when I started the computer back up it said that my clock was reset. Feedback is much appreciated.
iBook G4 14" Mac OS X (10.4.10) NewerTech 74w Battery, 1.5gb ram
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Jan 21, 2008
My adapter caught on fire, and I had to put it out. When I tried to charge my battery with a new adapter, it would not charge. I got another battery, (old one from a friend), that apparently had some juice left on it. The computer turned on no problem, and I used it for about 20 minutes when I noticed that the battery was slowly dying, and that it would not charge again. Now, its dead again. It will not charge. Does this sound like a logic board problem? Who can I contact?
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Jan 23, 2010
I've had my iBook G4 for about 4 years now. I replaced the battery two years ago and have had to replace the charger twice. My current charger, which I bought rather cheaply on ebay, will only charge the battery when my computer is shut down or sleeping.
This makes it very difficult to work as my current battery is losing charge quickly and plugging it in is of no use when I am using it.
Is there anything I can do to change this? Or do I need a new battery?
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Oct 7, 2007
My school-computer (iBook 14" 1,42 Ghz G4, running OSX 10.4.10) has developed some unpleasant habbits lately. With lots of batterycharge left, 28-50%, it shuts down without warning. I try to restart it, and it gets to various stages of booting before shutting down again. It won't run untill i plug in the powercable, and then it starts of from almost half full charge. I did a bit of searching on the forums, and installed coconutbattery with the attached (depressing) result. Tried resetting the pmu, which didn't stop it from shutting down on me again 46 mins later. Does this mean I need to replace the battery?
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Mar 3, 2009
i made my own power supply wall plugin cable for my ibook g3 power adapter. Its from a printer, computer boots fine, but with only one problem it wont charge the battery is this because i only have the two prongs connected to power while the weird silver circle doesnt have any power"
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Jan 1, 2006
I was just looking at the battery info for my PB which is about 1.5 years old. It says that my cycle count is 59. I was wondering how many cycles the average battery will do with a reasonable charge time? My absolute max capacity is 4400. I found the information with the following command:
ioreg -l -w 0 | grep IOBatteryInfo
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Sep 17, 2010
Basically I'm having issues with my newly acquired Powerbook G4. When i bought it the battery was not working at all so have now installed a new replacememnnt battery which works fine but having some slight issues. So...
First time I charged it, it reached 100% but green light never came on to indicate full charge. When I run the PB off the battery it gets to 20% and it shuts down without any warning it's low on battery (trying to switch it on after this is impossible, it clearly has no life) After the above I connect the power lead and start up the computer, the battery indicator starts charging from 20% onwards. Something fishy definitely going on and I have no idea what it could be, I calibrated the battery but it has always cut off at 20% since first charge/discharge.
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Aug 1, 2009
It just started getting really hot quickly for about a week before it didn't turn on. I would have it tilted so that its not flat, hoping that it would give it more air but it didn't do anything. I don't even need to do much to get it really hot. And I shut it off every night, so it should get to reset itself. I haven't done anything different that I haven't before. Any fixes please!? Also what's really weird is that it gets hotter and hotter even when it is off and not even plugged in.
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Dec 5, 2010
So I just picked up a powerbook g4 12" 1.5 for a notetaking/work/travel computer, and it's all good, but I had a quick question about the superdrive- aside from needing to reinstall leopard, I don't think I ever need it. this may be a stupid question, but if I take out the superdrive, will that give me more battery life and make the computer lighter?
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Sep 15, 2006
I've been having with my 500MHz Ti Powerbook. It has been acting very temperamental during startup where it will not startup at all, the fan will come on but no screen, or it will chime twice (and it's a weird sounding chime) and not startup, or it will freeze after logging in or during the log in stage. I got it to boot up once, but since then... it's dead. It will not startup. A friend tells me it's the internal lithium (PRAM?) battery that needs to be replaced
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Mar 26, 2008
My Powerbook G4 is only 2 1/2 years old, and yet my battery only lasts for a short time. I've read various consumer reports that laptop batteries these days (regardless of computer brand) only last 2-3 years, so this disappointingly seems to be the norm.A replacement battery from Apple costs quite a bit, so I can't help but think that if I replace the battery cells inside the battery casing myself I could save a bundle. This and this site shows how, but so far I haven't found anything specific concerning the Powerbook G4 battery. Does anyone here have more info on the subject?
By the way, what's the best way to "reset" the battery? My Mac seems to be uncertain of how much power the battery actually has (it might show 45 minutes left, then suddenly turn off) -or maybe this is just a sign of a worn out battery.
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Sep 14, 2006
i dropped my powerbook and now it doesn't work. i charged it and tried powering it on but nothing happened. however i connected my ipod and it got charged.
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Mar 3, 2008
I have and old, but powerful, powerbook g4 667 (gigabit ethernet) with leopard 10.5.2 and runs well, but the battery is crazy:
Capacidad de plena carga (mAh):26564 (full capacity charge)
It's possible to fix? I read that reseting power management, but doesn't seems to work. It's is possible that leopard is causing this? the battery problems begin when install leopard.
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Jul 19, 2008
I have a problem...my 12" Powerbook G4 doesn't start up properly at the moment. I turn it on, I can hear the chime, and the screen goes grey but then does nothing...I've tried holding down C while starting up too, but still nothing happens, just the grey screen.
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Jun 20, 2005
My Powerbook G4 only turns on if the battery charger is plugged in, and if I unplug it, the computer shuts off. On the menu bar, it says charging. I know the battery has to be full. This just started happening last night. Also, I just had the hard drive replaced and I've only had it back for a couple weeks.
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Jun 22, 2007
My Powerbook will not power on. I have followed some instructions on disconnecting the PRAM battery and that did not work, any ideas? I just stopped coming on without any explination.
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Feb 2, 2008
I have a Powerbook G4 1.67GB with 2GB ram.
I am constantly having problems with the laptop shutting down when it is just on battery. It doesn't do this if I am plugged into power.
It does this on a random basis whatever program I am running but generally at 80%. I currently have Leopard as the operating system.
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Jan 23, 2009
I have a 1.33ghz 12inch Powerbook with 768mb of RAM, my battery lasts for about 20 minutes, I am on my 4th ac adapter (and it is already broken again, I so get why they made them magnetic in future laptops). I am running Tiger... everything works just fine except the embarrassing battery life and unpredictable charging (b/c of the semi-broken power adapter).
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