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

91% battery life after 30 charge cycles?

iObama

iObama

macrumors 65816
Original poster
Nov 16, 2008
1,215
3,611
Hi all -

I noticed that my MacBook doesn't run as long as it used to before I have to charge it again. I downloaded CoconutBattery, and it tells me that my battery is down to 91% of its original capacity after only 30 charge cycles. It's 5 months old according to CB, and I bought it new on Dec. 24th. (It's a Unibody White...)

Is this normal, or should I take it into the Apple Store for a replacement?

Thanks!
iObama
 
That sounds about right for a battery of that age. They usually go up and down about 15% in the first year or so. Then they start dropping all on their own.
 
yeah mine has like 60 charge cycles and ranges anywhere from 88%-97%

at first i was worried but i was told it is normal.
 
Search around on this site, there are loads of threads on this. It's fine.
I'm surprised you can notice a 9% difference, I would think that's too small to be noticeable given the difference in use pattern from charge to charge.
 
Age of mine is 9 months, but battery max is still 91%; my school makes us use laptops, so we have to carry it back and forth. I've run completely out about 40 times :/
 
no big deal.. after 38 cycles I have 94% .. but it drops to like 91% and then back up to 97%... etc...


isn't accurate at all
 
I seem to be doing OK
Screen shot 2010-03-19 at 20.58.46.png
 
Only 30 cycles in 4months...do you use your laptop...
Anyway, mine is 532 cycles with a health status of 96%...according to iStat...but I do only charge my laptop when it drops to less than 10mins remaining on the battery, then unplug it as soon as it fully charges...
 
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