Sidebar Sidebar
Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.

MacBook power adapter and battery question.

L

Leonard.Green

macrumors newbie
Original poster
Aug 31, 2010
15
2
Hi guys,

Does the 60W Power Adapter does all the work with charging the battery,
or is there something else on the logicboard that also helps ?

Thing is that battery in MacBook Unibody Aluminium (late2008, MB466) seems to be damaged :

-only one year old battery
-about 270 cycles, around 75% of health
-LED is always green on magsafe
-it is a 5h bat, yet Leo shows 10h ready for use (but on battery MB goes down after ~5min)

This battery in other MacBook (also MB466) shows the exact same symptoms - lies about being fully charged,
lasts for 5min when Mac is unplugged (also shows 10 hours of work time on battery thats supposed to do 5h tops).


I would like to replace the battery, but to do so I need to be sure that there is no circuit in the
MacBook that may have damaged this battery, so after replacing this won't happen again.

It would be great if someone could help me with this.
Best regards,
L.
 
@GGJstudios - I saw this FAQ before I asked (gj putting it all together btw),
unfortunatley it won't solve my problem with lack of knowledge about the logic board,
nor it is clarifying whether it's safe to buy a new battery.

@spinnerlys - I think that calibration won't help when battery is almost dead
(it holds up to 5min of energy at this point, it was drained and left for some time already,
along with PRAM and SMC resets).

Thanks for your responses guys.

Still hoping to get something about the charging process, and LB role in it.
L.
 
As far as I know, there is not a component on the logic board that aids in charging the battery. Only the magsafe adapter, the dc-in board, and the battery connector is involved here.
 
@AlphaDogg - Thanks for the info, thats kinda what I was hoping for. If battery got bad all by itself
(Mac worked under different Power Adapters) then I guess it's ok to replace it.

spinnerlys said:
And if you have less than 1000 cycles and less than 80% health in less than a year since your purchase, Apple replaces the battery.
Click to expand...
In this case Apple based replacement won't work because this battery crossed 80% health line
right after hitting 12 months :( Just weeks after decreasing health to 75% it started behaving as described earlier.

About this 1000 cycles you mentioned - is Macbook Aluminium Unibody MB466/MB467 (late 2008)
equipped with 1000 cycles battery ? (battery model No A1280) ?

Thanks for the time you guys take to answer my questions :)
L.
 
Leonard.Green said:
About this 1000 cycles you mentioned - is Macbook Aluminium Unibody MB466/MB467 (late 2008)
equipped with 1000 cycles battery ? (battery model No A1280) ?
Click to expand...
Did you read the link I posted as the first reply to your thread? It has the answer there.
 
@GGJstudios - Yes, as I wrote
Leonard.Green said:
@GGJstudios - I saw this FAQ before I asked (gj putting it all together btw)
Click to expand...

But after reading your FAQ spinnerlys wrote about 1000 cycles. Since he knew
what my model is and since there is no specified models list on Apple page you
put in the first link (only divided into removable - built-in batteries), I assumed
there must be something I don't know (or understand), and that is how I came up
with my question. As I thought abefore, that division is strict and my MacBook
is in the 300 cycles group, right ?

Thanks for help.
L.
 
Leonard.Green said:
But after reading your FAQ spinnerlys wrote about 1000 cycles. Since he knew what my model is and since there is no specified models list on Apple page you put in the first link (only divided into removable - built-in batteries)
Click to expand...
Whether the battery is removable or not is the only distinction. All the removable batteries are good for 300 cycles. All the built-in batteries are good for 1000 cycles. Since yours is a 2008 Macbook with a removable battery, yours is designed to retain up to 80% of its original capacity at 300 cycles. The built-in battery was first introduced with the 17" MacBook Pro of early 2009.
 
You must log in or register to reply here.
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.
Top Bottom
Back