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How much battery health should I have after 9 months?

J

jayeskreezy

macrumors 65816
Original poster
Mar 3, 2005
1,137
0
Ok my battery was doing great and giving me 2.5 hours on a charge for months. Now all of a sudden it won't even charge past an hour and 40 minutes. Is that normal for my battery health to be that low this soon?

I have a 2.2 ghz SR mbp with 2gb ram running Tiger OS X. Purchased it in July 07.

Does apple have any warranty or defect guarantees against the battery? I checked Coconut battery and it said my mbp's batter is only at 80% now. That's horrible. :(
 
Agreed. Without knowing how many cycles of your battery you used in a month, all I can say is that your battery health should be somewhere between 0 and 100% of initial max capacity. ;)
 
mkrishnan said:
all I can say is that your battery health should be somewhere between 0 and 100% of initial max capacity. ;)
Click to expand...

lol yup, his does sound a little low though, the results should be interesting

also depends on what you are doing if you're running aperture or FCS all the time doing CPU intensive work then yeah you're only going to get about an hour of battery life
 
squeeks said:
lol yup, his does sound a little low though, the results should be interesting

also depends on what you are doing if you're running aperture or FCS all the time doing CPU intensive work then yeah you're only going to get about an hour of battery life
Click to expand...


I run FCE from time to time (well, at least once a month) and mostly just listen to itunes and am online. It depends on the day really. I do do a LOT of computer work though. Right now my computer is charging, but I'll tell you what Coconut battery said.

Current battery capacity: 4623mah
Original battery capacity: 5500mah
84% (it said 80% before I started charging it)

Battery load cycles:259
Age of your mac: 9 months (I actually have only owned it about 8-bought brand new)
 
jayeskreezy said:
I run FCE from time to time (well, at least once a month) and mostly just listen to itunes and am online. It depends on the day really. I do do a LOT of computer work though. Right now my computer is charging, but I'll tell you what Coconut battery said.

Current battery capacity: 4623mah
Original battery capacity: 5500mah
84% (it said 80% before I started charging it)

Battery load cycles:259
Age of your mac: 9 months (I actually have only owned it about 8-bought brand new)
Click to expand...

pretty much the same as mine, and its 9 months old as well
 

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jayeskreezy said:
Battery load cycles:259
Click to expand...

There you go. ;) You get lucky sometimes, but battery life on average is around 300-400 cycles, and you're pulling up to the end of it. You can't expect every battery to work at +2 SD's -- the bell curve doesn't work that way!

You can try giving it some more consistency -- charging it all the way up and running it down until sleep starts without recharging or going on AC power in the middle, and then recharging (immediately after the computer goes to sleep automatically). LiIon batteries are not supposed to really need conditioning, but it does seem to help to periodically run them this way, in my experience, and since yours already is not doing so well, you don't have anything to lose.
 
Strange, mine has never lasted long either. I bought mine SR MBP last summer as well and look at my results. This is pretty bad right? I mean for only 10 months, my battery usually lasts like an hour and a half at most. Any suggestions?

2342271182_0325fc51fe_o.png
 
Now yours is atypical. You should be doing better than that -- a lot better than that -- at 60 cycles. I'd try one or two good steady power draws (e.g. charge fully, deplete without returning to AC power till auto sleep, repeat). If it doesn't improve fairly quickly, contact Apple and ask for a replacement.
 
mkrishnan said:
Now yours is atypical. You should be doing better than that -- a lot better than that -- at 60 cycles. I'd try one or two good steady power draws (e.g. charge fully, deplete without returning to AC power till auto sleep, repeat). If it doesn't improve fairly quickly, contact Apple and ask for a replacement.
Click to expand...

Ditto. You should be able to get a free replacement no problem.
 
you think so? even after like 10 months? and who would i even call for that the apple retail stores or my apple care plan?
 
That's what a one year warranty is for. :p There are twelve months in a year. ;)

In your case, your battery's performance level is very inconsistent with how much you used it... at 60 cycles, the battery should work close to how it did when it was new. 260 cycles, like the OP, is a different matter.

You should be able to do it either way, AFAIK... but you should do it before your warranty expires.
 
mkrishnan said:
There you go. ;) You get lucky sometimes, but battery life on average is around 300-400 cycles, and you're pulling up to the end of it. You can't expect every battery to work at +2 SD's -- the bell curve doesn't work that way!

You can try giving it some more consistency -- charging it all the way up and running it down until sleep starts without recharging or going on AC power in the middle, and then recharging (immediately after the computer goes to sleep automatically). LiIon batteries are not supposed to really need conditioning, but it does seem to help to periodically run them this way, in my experience, and since yours already is not doing so well, you don't have anything to lose.
Click to expand...

Ok well, I'll see what the people at Apple have to say and if nothing favorable I'll get a new battery, but coconut batt says one thing, but my battery isn't even lasting a full hour and this is just with internet surfing-no other open applications or anything. This is extra annoying. :mad:
 
Errm... how did you survive 10 months with only 60 cycles? That's 6 cycles a month... 5 days a cycle...
 
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