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View Full Version : Macbook Battery Capacity Question (Take 2)



tom_mclean
30th June 2010, 12:01 AM
Hi all,

The battery life on my Macbook seems to be dropping rapidly.
I calibrate the battery regularly, but it doesn't seem to have any effect.

http://i50.tinypic.com/263wryq.jpg

Here is a screen shot from Coconut Battery.
Any experts know if this is average for a Unibody Macbook?

gehenna
30th June 2010, 12:10 AM
Since you insist on starting your own thread and not adding to one of the existing threads I gave you links for...

What does System Profiler say? Your results seems very poor, though CoconutBattery may be reporting differently to System Profiler. I've had my MBP for 13 months and it's much healthier than yours with over three times the loadcycles:

http://img.skitch.com/20100629-efg5m7d8j4y4a8jeec7eqkknea.jpg

tom_mclean
30th June 2010, 12:23 AM
http://i49.tinypic.com/123axrp.png

It says basically the same thing, 99 cycles, normal condition..

gehenna
30th June 2010, 12:25 AM
Give Apple a call and let them know, they'll let you know what you need to do - which may include having your MB serviced as the battery might be faulty, or another component may be at fault.

tom_mclean
30th June 2010, 12:43 AM
Sweet, thankyou.

Would it be easier to take it into the Genius Bar?

gehenna
30th June 2010, 12:49 AM
Maybe, though I'd have thought a quick phone call would be easier than going in to the store.

WindowsVista
30th June 2010, 05:37 PM
I have a 13" MBP. About 10 months old, with under 90 cycles. Capacity is like 4600mah...took it to the genius bar and they said it was fine (connected a nano to it). Argh..

javab0y
9th May 2011, 09:55 AM
I have the same / similar question... My new one is only a week old... (13 inch MBP).
https://img.skitch.com/20110509-pn4decibmpiefmi81w2agr74t7.preview.jpg (https://skitch.com/javab0y/r6erg/coconutbattery-2.7)

The last one I had was about 10 months old and was not great either:
https://img.skitch.com/20110424-mad3dxbca7yfriiq4f7hpaki75.preview.jpg (https://skitch.com/javab0y/r53rd/coconutbattery-2.7)

...compared to some of the other guys I have seen. How do people maintain 100% health after 500+ cycles I really don't know!!

I am just wondering what I am doing wrong?

My usage pattern is:
- Take laptop to work (8-10 hours at my desk), mostly browsing/music, light usage, plugged in all day.
- Take laptop home and used for light usage again for 2 hours on battery

(repeat 5 days a week)

- Weekend I use again for couple of hours on battery per day. Maybe charge once if required. I do the monthly drain / charge cycle too, religiously.

With the new one (top screenshot), I tried to only charge to 100% then use battery until fully discharged (same hours as above 8-10 in weekday etc) and the repeat but seem to be going down in health even quicker.

Can somebody please recommend what I should do? Eg leave it plugged in all the time?

I have read (and obviously followed) the Apple articles, such as (Apple - Batteries - Notebooks (http://www.apple.com/batteries/notebooks.html)) etc. but want some real world / practical advice for my above needs.

Thanks in advance.

jaelle
29th May 2011, 10:04 PM
javab0y - I asked the question on Friday at my local authorised service centre and they said I should alternate - plug in and charge, then use the battery til discharged.

javab0y
30th May 2011, 07:33 AM
javab0y - I asked the question on Friday at my local authorised service centre and they said I should alternate - plug in and charge, then use the battery til discharged.
Thanks jaelle, but that seems to be chewing up the health/cycles even quicker? That's exactly what I did (see screenshot above), and 7 days later my health was 95% and cycles was 7, that's no good right? Now I am just leaving it on the charger when I can, use on battery when on the couch etc. And do the 1 month fully discharge thing that Apple recommends...

nibbles
30th May 2011, 07:43 AM
Probably got a dud battery, I got one in my '09 MacBook and couldn't for the life of me work out what I was doing wrong until I called apple. As for my current MacBook it gets charged to 100% overnight everynight and then everyday during the week it gets discharged to under 40% most days and the other days under 20%. Even though the battery is 4 years old I still manage to get 4 hours on wifi and it is 89% healthy.

snark
30th May 2011, 06:19 PM
Now I am just leaving it on the charger when I can, use on battery when on the couch etc.
And do the 1 month fully discharge thing that Apple recommends....

I was told by the guys at CompNow when I showed them my '08 MBP that was only lasting 15 minutes on battery, that this is not good. I used to leave it plugged in all the time, and ran it down once a month. It only had 30 odd cycles, but the "health" was down the toilet.

Now I run it off battery a couple of times a week - usually down to between 10 and 30%