macbook battery stops charging at 98%


Recommended Posts

instant.human

recently, my macbooks battery will not load to 100% although the magsave is connected and all.

coconut is telling me that its overall capacity is at 98%, does it mean its slowly dying on me, because the capacity is just not 100% anymore?

istat pro tells me, its at 100% health, coconut says the charger is not connected although it is and istat seconds that its connected to power and yea, it just stops charging at 98%, as said.

mini battery logger even tells me that its at 5140/5020, which would be an even greater capacity then it actually should have but i know that happens sometimes.

im just a little confused by the different information i get.

my mac is 16 months old, its a blackbook 2,0 c2d...

Link to post
Share on other sites
Puggsley

I had the same issue after installing the 10.5.2 update on leopard. A permissions repair fixed the problem for me

Link to post
Share on other sites
instant.human

i dont really know if its since *5.2, im gonna try the permission-repair. =) thanks.

Link to post
Share on other sites
TogaForComfort

I see this all the time. The battery has a feature in it to stop overcharging and this sometimes cuts in to early.

Also worth noting is: If the battery is over 95% full and you connect the adapter it will not charge. Again this is intentional. the battery needs to be drained past 95% then plugged in. This is to try and limit charge cycling which can reduce the batteries lifespan quite dramatically.

Link to post
Share on other sites
instant.human

is that a new feature with 10.5.2?

sorry for my dumbness but... yeah... ;)

Link to post
Share on other sites
CPressland
is that a new feature with 10.5.2?

sorry for my dumbness but... yeah... ;)

No, it's hardware based so it's been there the entire life of your Mac.

One thing you can try is a battery calibration.

http://docs.info.apple.com/article.html?artnum=86284

I done this the other day and I'm getting at least another 10-20 minutes out of it now

Link to post
Share on other sites
instant.human

hum, never noticed it.

however, i did the battery calibration when i got it and 6 months later again.

the "problem" is sovled, anyways, now, its at 100%.

Link to post
Share on other sites
Wannes

It's not good to fully ( 100% ) charge your battery. Dell has been using such limitation for a while now. I'm sure you can find more about "overcharging" your laptop battery on Google but I am too lazy now. ;)

Noteworthy: The Safari spellchecker doesn't recognise the word "Google".

Link to post
Share on other sites
instant.human

hum, interestingly my battery is as of now fully charged at 100%, just as the last few days, i forgot about this topic, tbh...

however, your note is interesting indeed.

Link to post
Share on other sites
Wannes

My Macbook charges to 100% as well but Dells don't hence my point. :)

Link to post
Share on other sites
instant.human

now i see. had a few beers back then. ;)

Link to post
Share on other sites
TogaForComfort
is that a new feature with 10.5.2?

sorry for my dumbness but... yeah... ;)

As has been mentioned already it is part of the hardware, the Battery has a chip in it which manages this function (and a few others).

My MacBook is currently at 99% and has stopped charging which is normal.

Calibrating the battery will not fix this, as it's technically not an issue, it is by design.

Link to post
Share on other sites
erbol
As has been mentioned already it is part of the hardware, the Battery has a chip in it which manages this function (and a few others).

My MacBook is currently at 99% and has stopped charging which is normal.

Calibrating the battery will not fix this, as it's technically not an issue, it is by design.

Mine stopped at 98%.

Link to post
Share on other sites
This topic is now closed to further replies.
  • Recently Browsing   0 members

    No registered users viewing this page.