Here goes my battery again!

klymr

macrumors 65816
Original poster
May 16, 2007
1,447
98
Utah
Having problems with it not wanting to last very long. I'm getting less and less use outta it every time I use it. Time to recalibrate it and see if that helps. Here are some screen captures to show how bad it is.
 

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thegrifman

macrumors regular
Nov 8, 2006
161
1
Kennesaw, GA
Have you ever calibrated before today? I'm certainly not an authority on how long your battery should last but but I've got 26 Cycles on mine and it's still only at 96%. I have seen it where I calibrated and it went up a percent or two so hopefully that'll happen for you. At 10 Cycles mine was still at 100% Health.
 

flopticalcube

macrumors G4
Have you ever calibrated before today? I'm certainly not an authority on how long your battery should last but but I've got 26 Cycles on mine and it's still only at 96%. I have seen it where I calibrated and it went up a percent or two so hopefully that'll happen for you. At 10 Cycles mine was still at 100% Health.
I have had exactly the same experience. 10 cycles = 100%, 25 cycles = 97%
 

klymr

macrumors 65816
Original poster
May 16, 2007
1,447
98
Utah
Last calibrated about a month ago when I got this new battery. The old one had the same problem. I was at about 27 cycles, it would only last about an hour or two just browsing the web, and so Apple sent me a new one. My health had dropped down to about 96% and slowly regained back up to 100% at that 27 cycles. I guess I'll kill this battery today and start a calibration. Wish me luck!
 

john2006wright

macrumors regular
Jun 25, 2007
204
0
UK
what constitutes a cycle? Is it best to use a macbook on battery then charge to full or just leave it charging all the time and then keep topping it up if you need to switch to battery for a bit.

Thanks.
 

flopticalcube

macrumors G4
what constitutes a cycle? Is it best to use a macbook on battery then charge to full or just leave it charging all the time and then keep topping it up if you need to switch to battery for a bit.

Thanks.
One full discharge/recharge is a cycle. Or 10 discharges to 90% and small recharges. Or any combination thereof. Lithium Ion batteries prefer shallow cycling (small discharge/recharge). www.batteryuniversity.com
 

thegrifman

macrumors regular
Nov 8, 2006
161
1
Kennesaw, GA
what constitutes a cycle? Is it best to use a macbook on battery then charge to full or just leave it charging all the time and then keep topping it up if you need to switch to battery for a bit.
I don't know exactly how low you have to go to count as a cycle. I know I haven't gone below 50% and it's counted the next charge as a cycle. It's not necessarily best to use it on battery then charge, but if you have it plugged in most of the time you definitely want to calibrate it about once a month.

http://docs.info.apple.com/article.html?artnum=86284
 

klymr

macrumors 65816
Original poster
May 16, 2007
1,447
98
Utah
When I shut it off at school after using it for about 30 minutes I was down to 59 minutes and 59% charge. I sure hope it's nothing serious with my computer. This is kinda scaring me!
 

klymr

macrumors 65816
Original poster
May 16, 2007
1,447
98
Utah
So, here is another question. When calibrating, it says to leave it plugged in for at least 2 hours on a full charge and then to turn it on and disconnect the power and drain it. I had mine on a full charge overnight (Thursday to Friday) and it was asleep before I took it to school and started using it. I put it to sleep a few times throughout the day before draining it all the way last night.

So, do you think I need to recharge it, let it sit for 2 hours, and then use it until it dies again all in one continuous go around? Please let me know!
 

nc7r

macrumors member
Feb 1, 2007
99
0
Have you ever calibrated before today? I'm certainly not an authority on how long your battery should last but but I've got 26 Cycles on mine and it's still only at 96%. I have seen it where I calibrated and it went up a percent or two so hopefully that'll happen for you. At 10 Cycles mine was still at 100% Health.
Yeah, I checked mine and this is what it's showing:


I've only had it for about 2 months now but I try to keep it charged when-ever I can just to keep the battery life up. As you can see 19 charges, 99% battery life.

I'd definitely send it back!
 

klymr

macrumors 65816
Original poster
May 16, 2007
1,447
98
Utah
I'd say both of those are ok. Recalibrate it and see what happens.

I am at 10 cycles and down to 96% health with a battery lasting under 2 hours. This is ridiculous.
 

aquajet

macrumors 68020
Feb 12, 2005
2,384
0
VA
Yeah, I checked mine and this is what it's showing:


I've only had it for about 2 months now but I try to keep it charged when-ever I can just to keep the battery life up. As you can see 19 charges, 99% battery life.

I'd definitely send it back!
What's the problem? I don't see anything wrong with those numbers.
 

klymr

macrumors 65816
Original poster
May 16, 2007
1,447
98
Utah
Got mine back up to 99% with a 100% charge. I pulled the power adapter and let it sit for about a minute to calculate the remaining life. No apps open, screen brightness at the lowest possible setting (where the light is still on) and nothing else happening. It said I had 2:22 left. I still think I should have more life than that off a battery with 11 cycles on it. What do you think?
 

jczubach

macrumors 6502
May 15, 2007
385
0
northwest
Got mine back up to 99% with a 100% charge. I pulled the power adapter and let it sit for about a minute to calculate the remaining life. No apps open, screen brightness at the lowest possible setting (where the light is still on) and nothing else happening. It said I had 2:22 left. I still think I should have more life than that off a battery with 11 cycles on it. What do you think?
a) What do your login items say? System preferences, accounts, log-in items. b) activity monitor/ active processes? c) have you ever been in a Turkish Prison? that is a Joke.:rolleyes:my bad!
 

haiggy

macrumors 65816
Aug 20, 2003
1,309
51
Ontario, Canada
Have you ever calibrated before today? I'm certainly not an authority on how long your battery should last but but I've got 26 Cycles on mine and it's still only at 96%. I have seen it where I calibrated and it went up a percent or two so hopefully that'll happen for you. At 10 Cycles mine was still at 100% Health.
Mine is at 27 cycles and 99% health..
good thing though, 'cause my last iBook battery sucked!
 

klymr

macrumors 65816
Original poster
May 16, 2007
1,447
98
Utah
Here is a new update. I've been running it for about 40 minutes so far surfing the web using wireless. I did a battery recalibrate again and then restarted it and let it sit with the power attached over the weekend. Seems to be doing much better now!
 

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