Battery capacity of new 15" MBP (removable)

I have a late 2008 15" MBP, the last model with removable battery; bought it two and a half months ago. The maximum charge ever reported for it is 4563 mAh. Shouldn't these be 5000 mAh batteries? Is mine starting with 90% capacity then?
And yes, I've calibrated it few times since. Funny though, thanks to a more power efficient chipset and LED lighting, it actually has better battery life than my earlier non-unibody, non-LED MBP has with a brand new 5500 mAh battery, but still...

The Late 2008 15" unibody MBP battery has a nominal new full charge capacity of 4630 mAh (calculated). The 'health' widgets round that to 4600 mAh. So, your battery is perfectly fine.
For more details, see the Battery Health section of my User Tip:
http://discussions.apple.com/thread.jspa?threadID=1764220

Similar Messages

Battery capacity 97% - New MB

Hi, this is my first MB and i got it 5 days ago. Now the battery capacity shown on coconut battery is 97% and only after 3 cicles.... is that normal? I calibrated the next day i received it...
Thanks for your help
Message was edited by: montanasz

Full charge capacity as reported by the battery to the OS can fluctuate, kind of like blood pressure. Don't worry about it unless it shows a trend.

New battery is lower capacity compared to old MBP... 3rd party upgrade?

I find that I don't get as good of battery life with my new unibody mbp, compared to my old macbook pro, I found out that they lowered the capacity of the battery... does anyone know of 3rd party battery that fits in the mbp but has a higher capacity?

No. You should explore why you are getting shorter battery life with the new MBP. How much shorter? Have you checked Activity Monitor for runaway processes? The capacity of the new batteries is lower, yes. But, the machines are also more power efficient, so they should actually have slightly longer run times than the older machines.

20 month old MBP with only 80% battery capacity

Been noticing my 09 alu uni body 13" MBP now has a battery capacity of just 80%, according to Coconut Battery. I realise this app might not be too accurate, but I only checked it as I've been noticing a reduction in battery life recently.
I've been using MB's for years and employ all the usual good practices, I also regularly recalibrate the battery, although I understand these new non-replaceable models don't require it, nonetheless, it can do no harm.
My question is, is such a reduction in the batteries capacity normal on this machine after just 20 months use?
BTW- The use consists of running on mains at work during working hours, resting over night during the week, use on battery/mains at home at the weekend. According to Coconut the battery has had 348 cycles. Again, no idea how accurate this app is!
I have 3 years cover on the machine, so it it's deemed this is not usual I can pay the Apple store a visit, but I'd be interested in the views of other users whether this is normal or not.
Thanks.

If you think that's necessary. But losing 20% capacity in almost 2 years is pretty good for any battery. It's just that we can monitor it more accurately now.
You can get your current capacity vs design capacity via Terminal without coconut:
ioreg -l | grep Capacity
^that's a -L and then a |

13" MBP Battery Capacity

Anyone else seeing their battery capacity drop off?
I got my 13" MBP back in Mid June, and since then my battery capacity has declined to 95% (max capacity is now 5201mAh) with 49 cycles. I have calibrated it a couple of times new but it hasn't helped in any noticeable way.
The MBP does tend to live plugged in over night (and on) collecting tweets but then I used to do that with my old white MacBook without causing any problems to the battery.
At this rate of drop off I would be surprised if the battery readed its 1000 charge cycles at 80%

That's normal. The decline in battery capacity is not linear.

Expected life/capacity of new OEM battery?

I replaced then battery in my MacBook Pro (13" 2.4 GHz C2D, 8GB RAM, 1TB HD, OSX 10.9.1) back in November because my battery life had fallennoff considerably. Coconut Battery showed it had fallen below 80% capacity. I used a brand new Genuine Apple OEM battery.
Fast forward to tonight. I had connected this MBP to my TV to watch a program w/family. I turned the brightness all the way down. jjust over two hours later, my MBP shut down with no warning. I hooked up power cord and the machine booted. I cranked up Coconut Battery and found:
charge: 3%
current capacity: 5292 mAh
Design Capacity: 5770 mAh
Battery load cycles: 17
This seems rather week, especially compared to my old battery that went 6+ months before dropping to that capacity.
thoughts?

Your question begs another question HOW is the battery treated.
what was it before the movie? .......3% is a problem level to ever drop the battery to.
Contrary to popular myths about notebook batteries, there is protection circuitry in your Macbook and therefore you cannot ‘overcharge’ your notebook when plugged in and already fully charged.
However if you do not plan on using your notebook for several hours, turn it off (plugged in or otherwise), since you do not want your Macbook ‘both always plugged in and in sleep mode’.
A lot of battery experts call the use of Lithium-Ion cells the "80% Rule", meaning use 80% of the full charge or so, then recharge them for longer overall life. The only quantified damage done in the use of Lithium Ion batteries are instances where the internal notebook battery is “often drained very low”, this is bad general use of your notebook battery.
A person who has, for example, 300 charge cycles on their battery and is recharging at say 40% remaining of a 100% charge has a better battery condition state than, say, another person who has 300 charge cycles on their battery and is recharging at say 10-15% remaining on a 100% charge. DoD (depth of discharge) is much more important on the wear and tear on your Macbook’s battery than the count of charge cycles. There is no set “mile” or wear from a charge cycle in specific. Frequent high depth of discharge rates (draining the battery very low) on a Lithium battery will hasten the lowering of maximum battery capacity.
All batteries in any device are a consumable meant to be replaced eventually after much time, even under perfect use conditions.
If the massive amount of data that exists on lithium batteries were to be condensed into a simplex, helpful, and memorable bit of information it would be:
1. While realistically a bit impractical during normal everyday use, a lithium battery's longevity and its chemistry's health is most happy swinging back and forth between 20% and 85% charge roughly.
2. Do not purposefully drain your battery very low (10% and less), and do not keep them charged often or always high (100%).
3. Lithium batteries do not like the following:
A: Deep discharges, as meaning roughly 10% or less on a frequent basis.
B: Rapid discharges as referring to energy intensive gaming on battery on a frequent basis (in which case while gaming, if possible, do same on power rather than battery). This is a minor consideration.
C: Constant inflation, as meaning always or most often on charge, and certainly not both in sleep mode and on charge always or often.
From Apple on batteries:
http://www.apple.com/batteries/notebooks.html
http://support.apple.com/kb/HT1446
"Apple does not recommend leaving your portable plugged in all the time."

Intriguing about the battery in my new MBP

Hi everyone
I got two days ago my first mac wich is a macbook pro 13" from 2010. I've red all there is to read about the use of the battery on the Internet and on the Apple website and so far I have only done complete charges with it. (I wait until the battery is to 0% and then i plug it until the battery is at 100%).
I can use my macbook for about 6 hours without using wifi (ethernet, plus some videos watching).
I have downloaded the widget istat nano to see how is my battery and apparently with 6 cyles, I have a battery health of 100% and 5802m).
First of all I wanted to know if the numbers are ok ?
Finally I wanted to know if I use the battery correctly so far ? Should I let it plug longer ? Some people are also saying that it is not good to let the battery fall under 5% before plugging it. Is it true ?
Here we go, thanks for all your answers and sorry if some questions are dumb, I just want to keep my mac as long as I can and not bother Apple directly with my questions if they are stupid.
Thanks

Eh, batteries are fickle things, gooey chemistry and all that. Factors include time since the battery, not the battery pack was manufactured, temperature, temperature variance the battery's been exposed to and any thermal shock, drain amount and cycles, quality and purity of chemical batches used in manufacture, and for all I know phase-of-the-moon! IMHO the only thing more "voodoo science" in electronics than batteries is antenna design!
But you're right I seem to have lucked out on the battery in my new MBP 17", the one that came with my late-2008 Unibody MB lost 5% of it's health in the first few days of use and then got on the expected decline thereafter. Expectation and usually specification is 70-80% of capacity after 3 years. The annoying thing with Lithium batteries is that the clock starts ticking on their capacity as soon as they roll off the production line, no matter if they get used or not! Tip: Make sure any replacement Lithium battery you get is "fresh" and definitely not used (I'm looking at you eBay!)
James

What is the normal MBP Battery capacity?

I have an approx. 1 month old MBP; the first battery was just replaced by Apple. I received the new battery on Friday and let it charge fully. On Friday evening, I turned on the MBP and saw that the battery showed "original capacity 5500, current capacity 5391 (fully charged)". I thought that a bit strange, so I decided to calibrate it following Apple's instructions. On Saturday, after fully charging it again, it showed "current capacity 5301". So, now the capacity is worse - ?
Before calling Apple, I'd like to know if it's normal to have a 5% capacity reduction within about 24 hours - at that rate, the battery will be dead shortly.
I'd appreciate any input/experiences with battery capacity.

FIGURED IT OUT! My battery level reached 95% and the battery status said, "the battery is not charging"
I looked it up on apple support and found this very useful section in the Macbook Pro User's Guide:
"If the battery icon in the Finder menu bar is set to show the percentage of charge, you might sometimes notice that the battery does not attain a full 100 percent charge when the power adapter is attached. This is normal behavior; battery life is maximized if charging is not continuously cycled on and off when the battery’s charge capacity is between 95 and 100 percent. When the battery level eventually drops below 95 percent, it will charge all the way to 100 percent."
This fits with my problem. This macbook pro has been literally plugged in for well over a week!
So much for the "apple products are losing their quality"

MBP Original Battery Capacity?

I have a 9 month old (June 2009) 17" MacBook Pro5,2 with the new built-in long life battery (the battery is not user replaceable). I think the battery is faulty as battery life from fully charged to empty seems significantly reduced.
"About This Mac" reports battery full charge capacity at 8783 mAh, battery condition as "Check Battery" and cycle count for this battery is 65
iStat Pro reports battery health at 64%.
coconutBattery doesn't work for this model MBP as it's reporting original battery capacity at 1300 mAh.
How can I find out what the original battery capacity was so that I can compare current capacity with original capacity?

G'day Stolds, and welcome to the forums.
Your 17" came with a battery which Apple specify as a "95 Watt hour" battery.
The "nominal voltage" for the battery in the 17", used when converting from Watt hours to mAhs is 7.3V. (unlike the 15" and 13" which have a 10.8v battery)
P=vi (Watts = volts x amps)
Therefore i (amps)=P (watts)/v (volts)
95/7.3 = 13 Amps (roughly)
Multiply by 1000 to get mA
so this is a battery with roughly 13000 mAh capacity when new.
The non-removeable batteries in the unibody MBPs are rated to maintain 80% of original maximum capacity for 1000 cycles .
Your battery is way below par, and clearly defective. Take it in and get it replaced under warranty.
Cheers
Rod

MBP Battery capacity ?

Hi..
I bought MBP 15" on December in Thailand. Everything was fine and on June I found out the full charged Battery capacity was reducing from 5500mAh to 5320mAh. Every time I charged the battery the capacity seemed going down. I went to talk with apple center and a week later they replaced me a new battery which has 5520mAh(brand new battery). So, it's May 1st and it has only 12 charge cycles and now max battery capacity shows "5233mAh". Damnn second time and I went to the store again and they said... wait until it drops to 80% and they will replace it for me and yes by looking me with weird eyes. They said all the MBP batteries are always like this. What is this? Can't I have the right to replace with this god **** failure?
http://discussions.apple.com/thread.jspa?threadID=935410&tstart=0
Take a look at this link. This guy's battery capacity I've never seen this good condition before. >>>5813mAh 9months<<<
Calibration? Reset? My battery doesn't seems to appreciate those.
any suggestion please? so... should I have to wait till it drops to 80%? This ain't right. What should I do?
Help
Thank you<br>
Mac Book pro 15" Mac OS X (10.4.8) Core 2 duo 2.16GHz Ram-2GB
Message was edited by: MBP VS VAIO SZ

" Lithium-Polymer batteries will lose capacity with each charge cycle. After about 500 charge cycles (on average) the battery will need to be replaced. "
hmm.. I do understand now that Lithium-polymer batteries will lose capacity with each charge cycle like you said. But can you try to think again that my battery charge cycle has only 12 times and it dropped to 5233mAh from 5520mAh (2months). Isn't it too fast? so.. technically when I reach another 12 times and all together 24charge cycles my battery capacity would be around 4800+ mAh?
http://discussions.apple.com/thread.jspa?threadID=935410&tstart=0
I do understand this guy because his battery has 123 charge cycles + nine months
why I'm so sure of this because I do notice that every time I charge my MBP... the battery drops like 30mAh each cycle.
Thank you
Thanks to Kappy also

Full charge capacity amount on the MBP battery?

Hi all,
My MBP is only 4 months old. When I checked the batter's "Full Charge Capacity", it said 5550 mAh, which was even higher than the defult (5500mAh).
I just bought a new battery from Apple for my MBP the other day. The first day I got it, I followed the instruction to calibrate it. Then I checked its full charge capacity. It says "5450" mAh only. How is that? Why is it less the 5500?? Does that mean it has problem? I used this new batter for almost a week, it never goes to 5500 mAh....
Anyone has idea about this issue?
Thanks

UPDATE - I have found that by reducing the intensity of the display, even by a quarter, will add more than a hour to the life of the battery following a full charge. Reducing the intensity to just one quarter will give a battery life of between 4 and 4.5 hours. Putting the drive to sleep when not required extends the life to over 5 hours.
These figures are slightly better than the battery that was replaced under warranty. This suggests that their capacities are similar. I originally thought the old battery had a shorted cell, or cells, causing the battery to overheat and have a reduced capacity. I now believe I was wrong.
The Cycle Count of the new battery has reached 20 and the Full Charge Capacity 'appears' to be gradually reducing with each charge. This seems incorrect to me and I am now wondering if some kind of performance compromise has been implemented to reduce the frequency of battery failures.
I would be interested in hearing from any other forum members who has noticed anything different about the performance of the newer batteries?
I previously reported that the new battery runs cooler than the original. I have been monitoring its temperature during charging and not charging and its temperature is still gradually dropping and I am no longer suffering the 'hot lap' syndrome which I assume was because the original battery was faulty.
I imagine that the new battery requires a settling-in period so maybe the temperature will eventually stabilize. Is the charging cycle controlled by a process that can be updated? REGARDS Phil.

I just bought a new macbook pro 13-inch. I ran coconut battery test and it says age of the macbook is 22 weeks. And the battery load cycles shows 4 and battery capacity is 96%. Is this all normal? Does anyone have same issues?

I just bought a new macbook pro 13-inch 6 days ago. I ran coconut battery test and it says age of the macbook is 22 weeks. It shows 4 battery load cycles and battery capacity is 96%. Is this all normal? Does anyone have same issues?

"Is this all normal?"
Yes.
"Does anyone have same issues?"
What issues?
Coconut indicates an approximate battery capacity, and 96% is excellent. During testing and run-in, the MBP is charged and discharged, and a cycle count of 4 is appropriate.

MBP 17" Battery Capacity and Run Times : Survey

I've had 2 MBP 17's so far, and I'd like to get a general idea from everyone about their battery capacity and run times they are experiencing.
My first MBP17 had a Full Charge Capacity of ~5900mAh before calibration and PMU reset, and 6800mAh after. This translated to about 3:40 of run time under light load.
My current MBP17 had a Full Charge Capacity of ~5899mAh before calibration and PMU reset, and 6942mAh after (currently). This translates to about 3:48 of runtime....still trying to get some more real-world run time numbers under different loads.
This proves to me that it is quite critical to calibrate your battery and reset your PMU at least once to ensure that your battery is reporting it's correct capacity. I'd be interested to know what everyone else's batteries are reporting.

I've had 2 MBP 17's so far, and I'd like to get a
general idea from everyone about their battery
capacity and run times they are experiencing.
My first MBP17 had a Full Charge Capacity of ~5900mAh
before calibration and PMU reset, and 6800mAh after.
This translated to about 3:40 of run time under light
load.
My current MBP17 had a Full Charge Capacity of
~5899mAh before calibration and PMU reset, and
6942mAh after (currently). This translates to about
3:48 of runtime....still trying to get some more
real-world run time numbers under different loads.
This proves to me that it is quite critical to
calibrate your battery and reset your PMU at least
once to ensure that your battery is reporting it's
correct capacity. I'd be interested to know what
everyone else's batteries are reporting.
Battery Information:
Battery Installed: Yes
First low level warning: No
Full Charge Capacity (mAh): 6864
Remaining Capacity (mAh): 6862
Amperage (mA): -469
Voltage (mV): 12436
Cycle Count: 2
William

7 months MBP battery capacity

Hi,
I'm trying to find out the range of battery capacity for a 7 month MBP. The original battery capacity was 4600 mAh and now it only has 4439 mAh left. Is this normal?
I do calibrate my battery every 2 weeks and I tried resetting the SMC.
Any input would be appreciated!

The figures look fine, PaRaDa, but that is a pretty low cycle count for 7 months usage. Do you run it on the mains most of the time or is it just not heavily used?
These batteries tend to last best if you vary the usage pattern a bit, running off the battery for a while every day or two, etc., without necessarily taking it all the way down to flat.
see http://www.apple.com/batteries/notebooks.html for some useful advice on maximising your battery's life.
Recalibrating every few weeks is a good idea if your MBP is generally hooked up to the charger, or if you don't use it a great deal, but every fortnight is probably overkill.
I'd be aiming for a bit less frequent full recalibration, and maybe a bit more general use "off the charger", to get the best out of it.
But as Fred says, 96% is still pretty good after 7 months.
Cheers
Rod

Fluctuating battery capacity. can you give any tips to maintain my 596 cycles? (1 year old MBP 2012 13")

battery capacity went from from 80.4% to 78% to 86% within the same day. is this normal?
i alraeady have 596 cycles
1year old mac with applecare
before i'am always draining my battery, now that i knew that it is bad, what should i do now?
any tips and suggested routine?

Here is a list of Apple support documents regarding batteries.
http://support.apple.com/kb/ht1446
Look at the articles under the 'Optimizing battery life' category.
Ciao.

Battery capacity of new 15" MBP (removable)

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