2 years of use and WOW thats a lot of cycles! (rev a 12" pb)

joecool85

macrumors 65816
Original poster
Mar 9, 2005
1,355
1
Maine
457 cycles on my battery! And it still holds 2390 (52% of original), thats not too bad.

**edit**
Now at 1001, oct 2006.

**edit 2**
Now at 1815, oct 2007.

**edit 3**
Now at 1821, july, 2008.
 

EGT

macrumors 68000
Sep 4, 2003
1,605
1
System Profiler; in the hardware tab under "Power" .. Battery Information.
 

shadowmoses

macrumors 68000
Mar 6, 2005
1,821
0
debroglie said:
I shouldn't check this stuff or I'll obsess over keeping my cycles down :eek:
I agree don't check too much or you will get obsessed, anyhow to original poster that is surprisingly impressive that your battery is still holding that good a charge after so many cycles,

ShadOW
 

ChrisBrightwell

macrumors 68020
Apr 5, 2004
2,294
0
Huntsville, AL
Battery Information:
Battery Installed: Yes
First low level warning: No
Full Charge Capacity (mAh): 4173
Remaining Capacity (mAh): 4157
Amperage (mA): 0
Voltage (mV): 12506
Cycle Count: 101


All in ~13 months.
 

MACDreaming

macrumors newbie
Aug 5, 2005
3
0
Vermilion, Ohio
How do you keep the cycles down?

Sigh... I do not yet have all of the money saved yet for my first Mac. Which is going to be the 12" iBook with 1 gig of ram and 80 gig HD. :)

It will be used mostly in the living room wirelessly but the laptop will be plugged into the wall most of the time. Is this good or bad for the cycle thing? :confused: And/or should I remove the battery while it is plugged in if it is fully charged?

Just trying to get my ducks in a row before plunking down my money... trying to decide if I should wait until after Paris as I don't need need need it right this minute.... but boy it is sure going to be nice when it gets here. :D

Thanks,
Caroline
 

Xacent

macrumors member
Nov 14, 2003
30
1
Canada
24 months, still going strong

After 24 months my 17" PB still has 97% of original capacity. Granted I've only gone through 143 battery-loadcycles. I'm actually amazed considering that I use my PB all day every day for work.

The secret I guess is that I plug it in wherever I go so the battery barely ever needs to charge.


har har
 

blueflame

macrumors 6502a
Apr 3, 2003
825
45
Studio City
I also

Battery Information:

Battery Installed: Yes
First low level warning: No
Full Charge Capacity (mAh): 5125
Remaining Capacity (mAh): 4169
Amperage (mA): -2140
Voltage (mV): 11729
Cycle Count: 9

So,my question is, i have had the PB now for a little over 6 months. I keep it plugged in at the desk most of the time, should i leave the battery off of it most of the time? will it hold its charge? or should ikk leave the battery in while it is always plugged in.
Andreas
 

johnnyjibbs

macrumors 68030
Sep 18, 2003
2,959
119
London, UK
blueflame said:
Battery Information:
Cycle Count: 9

So,my question is, i have had the PB now for a little over 6 months. I keep it plugged in at the desk most of the time, should i leave the battery off of it most of the time? will it hold its charge? or should ikk leave the battery in while it is always plugged in.
Andreas
Only 9 cylces in 6 months! Don't quote me but you should be fine keeping the battery plugged in. If I remember correctly the battery isn't used at all while the power adaptor is in use, so it wouldn't make any difference whether you unplugged it or not. But the battery is there to save you if you have a sudden power cut or the like.
 

joecool85

macrumors 65816
Original poster
Mar 9, 2005
1,355
1
Maine
It's not the plugging and unplugging that does it. Only battery drain. One cycle is one time of using 100% power. Wether you do it from 100% down to 0% once or wether you do one time of 100% down to 80% and charge it, then 100% down to 20% and charge it. Either way it is 1 cycle.
 

johnnyjibbs

macrumors 68030
Sep 18, 2003
2,959
119
London, UK
I heard that you generally can't win either way. In general, the more times you charge it up (i.e. the more 'cycles' as explained above) the more you degrade your battery. But if you never unplug it, it goes down after time all of its own accord (though not as much). Apple has recently put a spiel on the bottom of the PB, iBook and iPod pages about efficient battery use and reccommends occasional running down of the battery if you always stay plugged in. I forget the link but it's easy to chase down on the Apple website.
 

CoMpX

macrumors 65816
Jun 29, 2005
1,242
0
New Jersey
I have a new 2005 14" iBook, stock config, and when it was brand new I used a capacity program and it said it was only 88% of the original capacity. (4055 uh...units) It told me that was excellent. Now, about a month and a half later, with fairly light usage, I use my mini for everyday stuff. It still has the same status. Is it normal for a battery to start out this low? Should I call Apple about this? Will I be able to get a new battery out of them?

Thanks,
Joe
 

Lacero

macrumors 604
Jan 20, 2005
6,639
2
~15 months
127 cycles
Full Charge Capacity 4281
Remaining Charge Capacity 4262
 

johnnyjibbs

macrumors 68030
Sep 18, 2003
2,959
119
London, UK
CoMpX said:
I have a new 2005 14" iBook, stock config, and when it was brand new I used a capacity program and it said it was only 88% of the original capacity. (4055 uh...units) It told me that was excellent. Now, about a month and a half later, with fairly light usage, I use my mini for everyday stuff. It still has the same status. Is it normal for a battery to start out this low? Should I call Apple about this? Will I be able to get a new battery out of them?

Thanks,
Joe
A battery's life starts to degrade from the moment it's manufactured and unfrotunately batteries can potentially be sitting in stock for several months before they are put into new computers or apliances but I don't know about the specifics. I'm not sure if Apple has a policy on this but it wouldn't harm to ask at your local Apple Store, if you have one. I know that a recent Think Secret article mentioned that Apple will replace your LCD screen with just one dead pixel if you ask them hard enough...

That said, I wouldn't take what the battery life indicator programs take as gospel. They may not be that accurate.
 

YS2003

macrumors 68020
Dec 24, 2004
2,139
0
Finally I have arrived.....
My 4 year old Ti PB has:
Full Charge Capacity (mAh): 3316
Remaining Capacity (mAh): 3176
Amperage (mA): 0
Voltage (mV): 16232
Cycle Count: 39

This is the original battery. I am quite impressed with this stat; but, I babied this Ti too much as I kept it on my desk, tethered to AC power most of the time.
 

bigsteve3

macrumors member
Jul 16, 2002
73
1
IL
So if mine is a 2 year old revision B PowerBook 12" and it says 116 cycles but only 2162 for mAh...that's a bad thing, huh? I've noticed that my battery gets much less power than it used to and that the battery monitor in the menu bar often lies...the computer will suddenly sleep despite having plenty of battery left...is there a way to calibrate the batteries? Or do I need a new one...some of this may be a result of me completely disassembling my beloved PB this past May...

-S
 

Mass Hysteria

macrumors regular
Jan 31, 2005
158
0
PBG4 revB 17" 1.33
cap max= 4.875
cap current= 4.874
99.98%
cycles= 148

I have noticed that since adding an extra 1GB ram over the stock 512, the battery drains much quicker

The battery does get warm during heavy use, but the memory gets HOT!!
 

Abstract

macrumors Penryn
Dec 27, 2002
24,418
124
Location Location Location
bigsteve3 said:
So if mine is a 2 year old revision B PowerBook 12" and it says 116 cycles but only 2162 for mAh...that's a bad thing, huh? I've noticed that my battery gets much less power than it used to and that the battery monitor in the menu bar often lies...the computer will suddenly sleep despite having plenty of battery left...is there a way to calibrate the batteries? Or do I need a new one...some of this may be a result of me completely disassembling my beloved PB this past May...

-S
My battery capacity was at 3700 mAh charge capacity 12 months ago. Around 6 months ago, my capacity was between 2700 and 3000 mAh.

Today: (23 month old 12" rev B Powerbook with the infamous sh*t battery included)
Full Charge Capacity (mAh): 1896
Remaining Capacity (mAh): 1896
Cycle Count: 122

My battery is utter crap. I mean seriously, I know all the rules of properly charging and using my battery, and yet THIS is what happens. I know some owners of Rev B. 12" PowerBooks have had a worse experience, but I still think I got shafted.
 

Cloudgazer

macrumors 6502
Apr 22, 2005
480
0
RSA
EGT said:
System Profiler; in the hardware tab under "Power" .. Battery Information.
My pbook doesn't have that option in system Profiler.
Does the pbook have to be plugged in to see the "power" tab?
 

bursty

macrumors 65816
Jan 31, 2004
1,001
3
Coming up on 2 years of owning my PB and here are the stats:


Full Charge Capacity (mAh): 2520
Remaining Capacity (mAh): 2507
Amperage (mA): 0
Voltage (mV): 12435
Cycle Count: 161


Is that good or bad? :confused:
 
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