Computer: iBook 1.2 GHz, ( May 2005)
Problem: Battery gives less than an hour autonomy.
Recente repairs: DC board replaced
Question: Is there a link between the two?
The computer wasn’t used for about two months before the repair happened. Before the repair, the battery would last at least 3 hours. There is about 220 cycles on the battery. Right after the DC board was put in ( by a professional approved Apple tech), the battery would not last an hour.
So two things seem to be causing this:
a) There is something weird about the new DC board or the repair.
b) The battery not being used for two months.
Any ideas? I will bring it back but I would like some other experts to give me an idea too.
I’m not sure about the exact English terminology used here but basically it is
Battery installed: yes
First warning of low level: no
Capacity of full charge : 926
Capacity left 558
Current intensity 500
Cycle count 205
Right now, it is not charging well at all. It’s been at 60% for ten minutes and the led stays yellow/green instead of orange. I am bringing it in next week for sure.
so should i believe that my battery when new could hold 5400 , and now it can hold at max 3478 ? so its like at 64% of newness ? ps mine is a 17" powerbook, a little over a year old. mig do you know offhand how many cycles you can expect out of a battery ?
All batteries are different, and all cycles are different, but you can expect abut 200-300 cycles on average per Lithium Ion battery.
The unfortunate thing is that there is so much folklore and myth surrounding batteries that people abuse them, thinking they are somehow saving them.
The best thing for a lithium ion battery is to keep it plugged in. If you need to use the battery for 5 minutes, plug it in again when you’re done. Simple enough, you’d think. But you’ll hear a lot of people give you different advice. A lot of this advice begins with “I heard that …” or “the guy at Futureshop said…” It’s all bullshit.
A cycle is usually half-discharge or more, depending on the battery.
I had an iBook battery, but I think I gave it away. Let me check.
Edit: I just did it again. In the instruction, it says: press control, option, shift and power at the same time. then wait 5 seconds, then press power to restart. However, it restarts when the first operation is done ( as soon as I hit power with the three other keys pressed.)
make sure the machine is off… then with your right hand press P with your pinkey finger then r with your index finger then use your thumb to hold apple option ( keys beside keybaord side by side ) then with yuor left hand press the ibook’s power button hold these keys down with your right hand till it bongs 5 times then let off.
So capacity is 926, Absolute maximum is 4400. I don’t know if it means anything but I got this result when the battery was at 65%
[quote]The first entry, capacity, should be above 3500 on a normally functioning battery. If you see a number below 1000, your battery is likely only lasting for one half-hour to one hour under normal operating conditions.
The battery for my 15" Macbook Pro pretty nearly died completely. Despite being plugged in 95% of the time, the battery life started to deteriorate rapidly a few months ago. It’s being replaced right now, and the screen is being looked at as well as it would stay dim on the left side after awakening the computer from sleep or even just the auto-dim.
Looks like getting the Applecare protection plan will be a good idea considering it didn’t take too long for the problems to occur.
Perfect timing, too. I’ve got work to do for a local company as well as a film producer in Vermont, and had to pass up some work due to my lack of a computer.
Here is an update of my MacBook Pro’s battery life after 1yr 8mo.
Is this a tragedy, or do these numbers add up to what should be expected?
I don’t know if this makes any deal, but I’m using a North American bought computer Full-Time in Europe (110V vs 220V). Also, as you can see by the CycleCount, I hardly ever use the laptop without wall plug-in…
Current Status of Battery life: Dead within 15 minutes of removal from power source…