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Level 1

7 points

Battery cycle count, what is healthy?

I have been reading about the cycle count. (no I don't have insomnia I have been having some charging problems.) I keep reading about cycle counts up to 300. I took my MacBook Pro into see a Genius and they told me that the count of '7' is healthy. Could some one please explain what is healthy. Should I be concerned? Should I buy a new battery this one is 5 months old.

Charge Information:
Charge remaining (mAh): 5441
Fully charged: Yes
Charging: No
Full charge capacity (mAh): 5441
Health Information:
Cycle count: 7
Condition: Good
Battery Installed: Yes
Amperage (mA): 147
Voltage (mV): 12600

MacBook Pro, Mac OS X (10.5.5)

Posted on Oct 9, 2008 6:45 AM

Best reply

Scott Burnett

Level 1

8 points

Posted on Oct 10, 2008 5:31 AM

I have a Macbook which is about 2 1/2 years old.
Charge Information:
Charge remaining (mAh): 4886
Fully charged: Yes
Charging: No
Full charge capacity (mAh): 4892
Health Information:
Cycle count: 506
Condition: Good

Should I be concerned about the cycle count of 506?

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17 replies

Aimsly

Level 1

0 points

Nov 16, 2008 11:21 AM in response to annism

Purchased (through my college): August 2006

The battery used to run just fine, but now I'm lucky if I can run it for 20 minutes without the power adapter. Here are the stats in the System Profiler:

*Battery Information:*

Battery Installed: Yes
First low level warning: No
Full Charge Capacity (mAh): 1438
Remaining Capacity (mAh): 1277
Amperage (mA): 268
Voltage (mV): 12605
Cycle Count: 208

The System Profiler makes it seem as though the battery capacity looks fine (to me, anyway). But when I run other programs like CoconutBattery, it says I have 20-40% of my battery capacity, depending on when I open the program.

Is it time for a new battery?

Yass09

Level 1

0 points

Dec 3, 2008 2:42 PM in response to neuroanatomist

Hi, I read your comments on this forum and I would like to get your advice.
I am about to buy a new battery for my mac because the battery now has a level of health of 7%, but the odd thing is some days it will indicate a health of 84% then the next day 23% for a few days and now it has come down to 7%.
Each time the battery life corresponds to the level of health (charging capacity and duration of use) meaning that some days it lasts long and some days it only lasts 20 mins.

I have had this macbook pro for 13 months only, just ran out of warranty by one month which is frustrating. The cycle count on it is 392, which is high but wouldn't think the capacity would decrease so much and so suddenly (a couple of weeks back it was working perfectly fine).

I have tried every manipulation (calibrating - actually I think this may have caused a problem as it was not long before it began- , reinitialisation of SMC,PRAM, long press of start button after taking out battery and charger, restart in T-mode).

DO you think I should buy a new battery?

Thanks a lot for your help

Yass09

Battery cycle count, what is healthy?