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View Full Version : How low can your battery go? I beat you!




mtbdudex
Apr 18, 2008, 01:52 AM
Contest:
How low can your battery go?

I'm talking load cycles, current capacity, and age.

Mine has 312 load cycles and 22% capacity left.
Lasts about 30-ish minutes unplugged, actually with my 6 year old daughter this is an automatic "computer limiter" as she plays webkinz, when the MacBook goes to sleep time to quit.

I sure am cheap, cost of gas/etc has delayed me from buying a new battery, why should I, mine is 23 months old and still "works".....:rolleyes:
Post image as proof.
http://lh6.ggpht.com/mtbdudex/SAhCoUow7wI/AAAAAAAABvk/1gS-spVhkHA/s400/MacBookBattery.jpg



richard.mac
Apr 18, 2008, 01:58 AM
nice! my MBP's battery used to have a life of 1s when i unplugged it but thats cheating as it was defective.

is yours defective or on the battery recall list? you never know you could get a new one as MacBook/Pro batteries have a 2 year warranty now.

mtbdudex
Apr 18, 2008, 02:11 AM
is yours defective or on the battery recall list? you never know you could get a new one as MacBook/Pro batteries have a 2 year warranty now.

My MacBook is 23 months old, like the original still in use battery.
I remember reading a few months back about not using batteries with more than 200 or so charge cycles, well I'm 50% past that guideline and still going .

Is there a recall/extended warranty for my original battery?
I am not aware of anything.

Hardware Overview:

Model Name: MacBook
Model Identifier: MacBook1,1
Processor Name: Intel Core Duo
Processor Speed: 2 GHz
Number Of Processors: 1
Total Number Of Cores: 2
L2 Cache (per processor): 2 MB
Memory: 1 GB
Bus Speed: 667 MHz

richard.mac
Apr 18, 2008, 05:06 AM
well Apple's notebook battery page (http://www.apple.com/batteries/notebooks.html) says down the bottom right:

A properly maintained Apple notebook battery is designed to retain up to 80% of its original capacity at 300 full charge and discharge cycles. You may choose to replace your battery when it no longer holds sufficient charge to meet your needs.

so ring up Apple care and tell them you only have 20% capacity after 300 charge cycles and ask about the 2 year battery warranty and they may replace it. otherwise just buy a new battery… unless you still want the Mac to run as a "computer limiter" for your daughter.

mtbdudex
Apr 18, 2008, 11:36 AM
well Apple's notebook battery page (http://www.apple.com/batteries/notebooks.html) says down the bottom right:



so ring up Apple care and tell them you only have 20% capacity after 300 charge cycles and ask about the 2 year battery warranty and they may replace it. otherwise just buy a new battery… unless you still want the Mac to run as a "computer limiter" for your daughter.

From apple site:
Notebook Owners

Your one-year warranty includes replacement coverage for a defective battery. You can extend your replacement coverage for a defective battery to three years from the date of your notebook purchase with the AppleCare Protection Plan. However, the AppleCare Protection Plan for notebook computers does not cover batteries that have failed or are exhibiting diminished capacity except when the failure or diminished capacity is the result of a manufacturing defect. For MacBook Air owners, Apple offers a battery replacement service. You can purchase replacement batteries for late models of Apple notebooks directly from the Apple Store.

I had the std warranty, so mine is out of warranty. Even then, the disclaimer "does not cover batteries that have failed or are exhibiting diminished capacity except when the failure or diminished capacity is the result of a manufacturing defect" totally limits Apples liability IMO.

For now, will keep the battery until it's "real" unplugged time is below 17-20 minutes, then we'll repalce it. (2-3 more months, when we get the IRS tax rebate/economic spending stimulus check....)
Just for info, I'll post that here at a later date inside this thread.

Still I wonder, are there other MacBook/MacBookPro people with 300+ cycles and have sig more capacity still?

CrzyCanuck72
Apr 18, 2008, 11:40 AM
317 cycles and 92% health (this actually just changed, it was still 100% last time I checked a couple weeks ago)

18 month old MacBook C2D

davidwarren
Apr 18, 2008, 11:47 AM
Mine's doing pretty well I think:

meyer1131
Apr 19, 2008, 05:39 PM
Do I have a bad battery?

Zwhaler
Apr 19, 2008, 05:43 PM
Almost year old BlackBook (May 07 model), 115 cycles and a lowly 100% battery health ;) :p

dollystereo
Apr 19, 2008, 05:53 PM
Almost year old BlackBook (May 07 model), 115 cycles and a lowly 100% battery health ;) :p

41 cycles, 77% pretty bad....

Zwhaler
Apr 19, 2008, 05:55 PM
41 cycles, 77% pretty bad....

That is pretty bad, you ought to get a replacement from Apple, they will likely give one to you. Unless you are out of warranty.

rrijkers
Apr 19, 2008, 06:02 PM
I am doing great! And I know why, I run on power as less as possible, keep the liquids flowing is what the advice is, even when it is Li-Ion

http://i32.tinypic.com/11abg61.png
347 cycles, 82% health

:rolleyes:

Mord
Apr 19, 2008, 06:05 PM
http://img291.imageshack.us/img291/4843/batteryhealthrv0.jpg

:P

Eraserhead
Apr 19, 2008, 06:10 PM
I had the std warranty, so mine is out of warranty. Even then, the disclaimer "does not cover batteries that have failed or are exhibiting diminished capacity except when the failure or diminished capacity is the result of a manufacturing defect" totally limits Apples liability IMO.

The disclaimer doesn't cover batteries with less capacity that 300/80%, if it has less capacity than that its defective.

EDIT: See also http://forums.macrumors.com/showthread.php?t=472731

tyr2
Apr 19, 2008, 06:22 PM
Well mine looks like the attached at the moment which is rather unfortunate. Ordered a replacement one from an eBay retailer today. Claims to be a genuine apple part and is going to be £40 rather than the £100 that Apple wanted.

rrijkers
Apr 19, 2008, 06:28 PM
Weird stats u got there tyr2

meyer1131
Apr 19, 2008, 08:19 PM
will apple go by what coconut battery says? cause 16 cycles and only 92 battery life left is not good.. my stats were posted earlier this night..

skierdude
Apr 19, 2008, 10:35 PM
my battery has been doing pretty well the year I've had it. I always run it down to 1% every chance i get to recalibrate it:)

tangledweb16
Apr 20, 2008, 01:32 AM
Wow that's..... sad.

Mine has 98% capacity. :rolleyes:

rrijkers
Apr 20, 2008, 04:52 AM
will apple go by what coconut battery says? cause 16 cycles and only 92 battery life left is not good.. my stats were posted earlier this night..

This is not so bad I think, it never actually is 100% I think :confused:

gothamm
Apr 20, 2008, 07:34 AM
5 months :cool:

http://img.photobucket.com/albums/v439/gothmanprophecys/Picture2-1.png

Wireless Buddy
Apr 20, 2008, 08:12 AM
My iBook's battery is original, a little less than 5 years old, and I get an hour and a half. :p

rrijkers
Apr 20, 2008, 11:10 AM
78 cycles, i suppose u dont run wireless a lot?

ki2594
Apr 20, 2008, 11:36 AM
can someone explain this cycle stuff to me. I have 15 right now?

mlemonds
Apr 20, 2008, 12:57 PM
:cool:

http://www.lemondsphoto.com/laptop/coconut.tiff

iToaster
Apr 20, 2008, 01:04 PM
can someone explain this cycle stuff to me. I have 15 right now?

A cycle is how many times your battery has been discharged and charged (ie 1 complete total discharge or 20% one day, 30% the next, and 50% the next, regardless of charging or not). I wish I could give you a stat of my PowerBook's old battery (it was around 20%) but I bought a new one for it the other day, so I'm too lazy to go get the other one.

davidwarren
Apr 25, 2008, 03:10 PM
I think if you leave it plugged in all the time it kills the battery. I unplug my MB as soon at it is at 100%, unless I am using the disc drive. Also I let it run down almost all the way before plugging it back in. My battery health is still at 100%, whereas my grandmother, who got a MB last xmas (like 4 months ago), and leaves her's plugged in all the time, has a battery at about 92%.

Laco
Apr 25, 2008, 05:44 PM
I think if you leave it plugged in all the time it kills the battery. I unplug my MB as soon at it is at 100%, unless I am using the disc drive. Also I let it run down almost all the way before plugging it back in. My battery health is still at 100%, whereas my grandmother, who got a MB last xmas (like 4 months ago), and leaves her's plugged in all the time, has a battery at about 92%.

i don't know i keep mine plugged in all the time and i still have a 100 percent after nearly 10 months but I have only 47 cycles. haha its plugged in right now.

bigandy
Apr 25, 2008, 05:50 PM
Methinks I be calling in at the Apple Store soon...

Lasts about 1hr30 off mains. The Loadcycles isn't right. It's about 13. I don't really use it away from mains, and calibrate it once a month or so.

Koola
Apr 26, 2008, 11:29 AM
Mines running fine.

http://img181.imageshack.us/img181/8946/picture1tc2.png

CJRhoades
Apr 26, 2008, 11:38 AM
I bought a new battery 1 1/2 years ago for my TiBook. It currently has 438 cycles and still lasts 2:30 on average. Is it luck or is it the non-battery gulping ppc?

SkyBell
Apr 26, 2008, 01:06 PM
There's obviously something wrong here...

Eric Lewis
Apr 26, 2008, 01:10 PM
can someone explain mine

its a 2004 week 31 powerbook

http://img.skitch.com/20080426-6kup6qq42ppa2nkkpic1ntsae.preview.jpg (http://skitch.com/ericlewis91/kjbx/coconutbattery-2.6.3)Click for full size (http://skitch.com/ericlewis91/kjbx/coconutbattery-2.6.3) - Uploaded with plasq (http://plasq.com)'s Skitch (http://skitch.com)

mtbdudex
Apr 28, 2008, 08:37 PM
Wow;
Looks like the majority of people either do better battery management than I or what?

We usually leave the MacBook plugged in the kitchen island counter, but I'd say at least 1-2 times a week the battery did get a full discharge and re-charge, so we still cycled the battery.

I did use the save feature to sorta track history of the battery, mostly last Oct/Nov is was just over 80%, so I never got concerned and stopped tracking, now of course "How low can I go"?
http://lh4.ggpht.com/mtbdudex/SBZ6GiE79UI/AAAAAAAABzY/RKovvdYaCr8/s800/MacBookBattery4-28-08.jpg

lostfan916
Apr 28, 2008, 11:27 PM
Charge it, run it down, charge it... just like Apple said to do. :p

bobwill
Apr 30, 2008, 10:31 AM
Here's Apple's page on laptop batteries.
http://www.apple.com/batteries/notebooks.html
They say that you should atleast slightly discharge the battery fairly frequently.
"Apple does not recommend leaving your portable plugged in all the time. An ideal use would be a commuter who uses her MacBook Pro on the train, then plugs it in at the office to charge."
Personally, I take my macbook to work just about every day (while it's asleep), and if I use it at work I'll usually leave it unplugged unless it drops below 50% charge. Then I plug it in when I get home.
So far, my system seems to work for me:
http://mysite.verizon.net/rwillia532/Picture%202.png

CDL0012
Apr 30, 2008, 08:47 PM
Pretty good for its age and amt of cycles... I'm a college student, so its basically in sleep mode when I get back to my apt and then plugged in when I'm in class.

http://www.leesimplicity.com/images/battery.png

PowerFullMac
May 1, 2008, 06:40 AM
My iBook G3's HD died and I cant be bothered to replace it as im selling it for £70 to my mate's dad and I am getting a MacBook within the next week anyway, so I cant screenshot this or anything...

BUT... After almost 4 years about 80% of the battery was still working according to Coconut Battery!

Do I have a special one?

mtbdudex
May 20, 2008, 01:16 AM
Charge it, run it down, charge it... just like Apple said to do. :p

So, at work I have a Dell Laptop, it docks into a station and I use it there 95% time plugged in, those batteries are different technology than Apple's?

I never had problem in 22 months, same battery, never have to do this re-condition stuff.

btw, we are going to buy a new battery, thx to Fed govt stimulus check!

daneoni
May 20, 2008, 03:49 AM
Not to shabby, can't believe its been 5 months already.

docc
May 20, 2008, 04:15 PM
I'm quite happy with mine actually.

http://img122.imageshack.us/img122/6170/batterystatstp8.jpg

PowerFullMac
May 20, 2008, 04:20 PM
I have the best battery :D

Notice also how my maximum charge is higher than the capacity of the battery!

applefan1997
May 20, 2008, 09:22 PM
Is this normal? 534 cycles, 11%.

mtbdudex
May 21, 2008, 03:30 AM
Is this normal? 534 cycles, 11%.

How long does your laptop last unplugged before sleep, 10 or 12 minutes?

BTW You win, 11%!
I'm still at 20%, buying new battery today from Apple store during lunch.

applefan1997
May 21, 2008, 08:39 AM
Yay! LOL.
It lasts about ~50 minutes taking extreme saving measures, about ~25 otherwise.

mtbdudex
May 22, 2008, 01:24 AM
Well, stopped by Apple store, bought a new battery, negative battery cycles??

Charged it for full 4+ hours.

http://lh4.ggpht.com/mtbdudex/SDUQAsTcnII/AAAAAAAAB9k/Zwd7wU_i-4c/s800/newbatt5-22-08.jpg

andybno1
May 22, 2008, 07:03 AM
so basically a good rule of thumb would be just leave it unpluged till the battery dies then charge again?

I left mine plugged in while I did stuff like iMovie and shared to youtube

PowerFullMac
May 22, 2008, 07:28 AM
Well, stopped by Apple store, bought a new battery, negative battery cycles??

Charged it for full 4+ hours.

http://lh4.ggpht.com/mtbdudex/SDUQAsTcnII/AAAAAAAAB9k/Zwd7wU_i-4c/s800/newbatt5-22-08.jpg

Lol, -1!

How come it says "MacBook" at the corner of yours but "INTEL" on the corner of mine?

radellaf
May 22, 2008, 08:49 AM
I am doing great! And I know why, I run on power as less as possible, keep the liquids flowing is what the advice is, even when it is Li-Ion


http://www.candlepowerforums.com has some good battery info.

And, that is definitely not the advice.

The only advantage/use of cycling your battery would be to calibrate the capacity measurements.

What would go the farthest to making it last more cycles is if someone wrote a hack to charge the battery to, say, 4.1V per cell instead of 4.2. You'd have slightly less capacity, but much longer cycle-life. There is an advantage to not keeping the battery at 100%, but you can't get that advantage by using it a lot ;)

Apart from that? Keep it cool. They can die with little usage just from sitting under a hot laptop for years. If yours rarely leaves the desk and runs hot, consider removing the battery.

I suppose coolbook, or whatever kept the maximum continuous power lower, would help a little. I routinely play games that give me 1.5h on a MB, which, for the same number of cycles, would be a little worse than using it at a 3-4h rate. Still, only a 1h rate or worse would really be a problem.

50% charge is the best level for long-term storage.

And, last, they are generally good for about three years, even if not cycled much. If you get more, consider yourself fortunate.

PowerFullMac
May 22, 2008, 08:53 AM
Technitions at my school told me that discharging and fully charging a new battery 3 times puts it to its full capacity.

My MacBook's battery meter time left thingy jumps around all over the place! From 6 hours to 8 then 2 then 4... Make up your mind! :D

atszyman
May 22, 2008, 09:07 AM
i don't know i keep mine plugged in all the time and i still have a 100 percent after nearly 10 months but I have only 47 cycles. haha its plugged in right now.

Can't complain... almost 4 years, 145 cycles (105 on my other battery) and 85% left on both... I don't think I've even done a re-cal on either battery since I first got the computer... Might have to try that this weekend.

radellaf
May 22, 2008, 09:38 AM
Technicians at my school told me that discharging and fully charging a new battery 3 times puts it to its full capacity.

That's...a little simplified, and more applicable to NiMH or NiCd after extended storage.

LiIon capacity may increase a _small_ amount over the first few cycles. No gain after that.


My MacBook's battery meter time left thingy jumps around all over the place! From 6 hours to 8 then 2 then 4... Make up your mind! :D

Yeah, I get about 4 web browsing at low backlight, and 1:30 playing WoW at full (&, natch, with the fan at full blast).

bart rijksen
May 22, 2008, 09:44 AM
/Users/bart/Desktop/Picture 1.jpg

for some reason it says my mbp is 7 weeks old, but it is only 1

iBlue
May 22, 2008, 09:49 AM
/Users/bart/Desktop/Picture 1.jpg

for some reason it says my mbp is 7 weeks old, but it is only 1

you might have better luck attaching that. ;)

use the http://images.macrumors.com/vb/images/editor/attach.gif icon to upload.

PowerFullMac
May 22, 2008, 10:01 AM
/Users/bart/Desktop/Picture 1.jpg

for some reason it says my mbp is 7 weeks old, but it is only 1

Its becuase it was manufactured and shipped and kept in the Apple Store until you baught it ;)

krye
May 23, 2008, 10:13 AM
Should I be concerned about this. I have 2 MacBook batteries. I rotate them out every time one is depleted. This one is 24 months old and with 100% charge it only has 81% health. My other one is still at 100% with the same amount of load cycles. Looks like a cell died. Apple won't do anything with this will they?

haiggy
May 23, 2008, 10:32 AM
Wow what the crap I always get terrible batteries from Apple....

62 cycles
40% health


*****

Auzburner
May 23, 2008, 11:25 AM
Not too shabby...

gothamm
May 23, 2008, 12:11 PM
Not too shabby...

only 48 cycles?

I am guessing you use it more as a desktop.

alphaod
May 23, 2008, 07:02 PM
Mine's doing pretty well I think:

Impressive.

Do I have a bad battery?

Yes.

I am doing great! And I know why, I run on power as less as possible, keep the liquids flowing is what the advice is, even when it is Li-Ion

http://i32.tinypic.com/11abg61.png
347 cycles, 82% health

:rolleyes:

That's really nice.

http://img291.imageshack.us/img291/4843/batteryhealthrv0.jpg

:P

800+ cycles? I'm hoping for that!

Well mine looks like the attached at the moment which is rather unfortunate. Ordered a replacement one from an eBay retailer today. Claims to be a genuine apple part and is going to be £40 rather than the £100 that Apple wanted.

Shouldn't Apple cover that?

---

BTW this is mine:
http://i51.photobucket.com/albums/f390/alpha_ran/f0faec9c.png