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Discussion in 'MacBook Pro' started by josueg942, Apr 4, 2009.
I don't think it is....
Take it to an Apple Store for a replacement.
Calibrated? If so how often
How are you getting those readings? About my mac? iStat? or Coconut Battery?
What model of Mac is it? How old is it? Do you have Applecare?
iStat it is.
Yes I do
2.2 ghz c2d 128 vram 2 gigs of ram 120 gigs of hd
Apple batteries are designed to hold 80% of their charge for 300 cycles, so I'd say your battery is defective and should be exchanged ASAP for a new one.
I purchased a replacement battery for my macbook pro (2.16 c2d) it currently is at 90 cycles and 93% battery health. Does this sound right? I don't think I'll have 80% health at 300 cycles.
I've got 103 cycles on a umbp and it's still at a 100%
It doesn't sound totally out of the ordinary. I'd say your battery still falls within the "normal" category.
Welcome to MacRumors....where arrogance comes standard with ignorance.
I just calibrated my battery.... did some gaming on battery power... had the games kill the battery off...
let it sleep for like an hour even though it should be 5 hours...
now I'm recharging my battery... it's half way to 100% and I already got 97% of battery health on 97 cycles...
Thanks for your advice!
Take much care - Josueg942 =]
Whenever you can, I'd suggest letting it sit empty for the 5 hours that Apple suggests... just to let it drain to as empty as possible. Maybe let it sit empty overnight or something. Then just charge it back up to 100% and it should be good hopefully. (In case you were wondering, you CAN use the computer while it is charging back up to 100%)
I have had my MacBook Pro for 14 months and it is at 54% after 91 cycles. I don't calibrate mine as often as you are supposed to, but I have calibrated it multiple times within the 14 months I have had my MBP. I am unhappy with the battery performance, but since I can't really afford a new computer right now, I think I may have to buy a new battery.
I don't ever calibrate my battery. I'm not really concerned about some percentage. After a year and a half of ownership, I still get about 3 hours of battery life with the display about half-way dimmed.
The lifespan of a battery isn't just based on battery cycles. It's based on age as well. If your battery (or any Li-ion battery) is over 2 years old, the capacity will eventually start to drop rapidly like a rock. The capacity always decreases with time (and battery recharge cycles), but very slowly. However, the battery will eventually hit a wall, where its capacity will decrease very rapidly over a few months.
Your battery sounds like it may be old, since your laptop is probably around 2 years old.
Yeah, I will let it drain tonight and let it sleep like that.
The reason why I left it to sleep 1 hour was cos it's daytime and I have stuff to do...
My blackbook is over 2 yrs old and last I checked it had nearly 700 cycles and still read 100%!
My current UMB isn't doing quite as well. I just checked it and it's at 99% with 187 cycles, but it's been bouncing between 97-100% ever since I got it.
Abstract provides a meaningful perspective. I have only 113 cycles, the battery has 47% capacity left, and is 31 months old.
So - all in all - I can't really complain. Probably time for me to purchase a new battery.
Sounds like you use it plugged into the adapter most of the time anyways. Do you even need a new battery?
That would be correct. There are those times though....
The battery life is really dropping now - unpredictable. What I want to avoid is purchasing a new battery 2 months before I upgrade to whatever and the buyer enjoys a nearly new battery.
Also - not sure what additional risk I may be running of the battery swelling / leaking as it ages.
Hey, does 167 cycles at 50% sound normal? I was thinking it did, but I just wanted to check. Thanks.
Not at all. My blackbook just barely dropped to 99% after 2.5 yrs and well over 700 cycles. My UMB is not doing quite as well. it keeps bouncing between 97-99%, and I have 213 cycles on it.
My battery is currently at 78 cycles, and I've had the mac for around 22 months. Current max battery charge is at 3306 mAh. It seems a tad low for the ammount of cycles it has....I got the machine in August of 07'
My coconut battery looks just like that. I have a macbook pro August '07. It's at 50% health though. I doubt apple will replace our batteries. Maybe someone here has tried?
I'm at 60 cycles and at 92%, this is a replacement battery... my other one failed and couldn't hold a charge.... sounds a lot like your situation