5 Replies Latest reply: Jun 12, 2013 2:46 AM by LowLuster
Maorriyan Level 1 Level 1

Hi All,

Does any body know how OSX count the power cycle count?

I noticed my MacBook Pro power cycle count increment by 2 instead of 1.


MacBook Pro (15-inch Early 2011), OS X Mountain Lion
Reply by LowLuster on Jun 2, 2013 2:17 AM Helpful
That really can't happen. You probably aren't noticing the individual counts. A cycle is a full discharge and recharge or multiple discharges and recharges that equal one full dischrage and recharge. Like running the battery down to around 50% then recharging it. If you do that twice it equals one cycle. running the battery down to 75% then charging it would take four of them to equal one cycle count. So if you are running the battery down to 20% or lower then charging and again down to 20% or lower then charging depending on what you did in the recent past that could increase the count by 2 cycles.Maorriyan wrote: Hi All,Does any body know how OSX count the power cycle count?I noticed my MacBook Pro power cycle count increment by 2 instead of 1.
Reply by clintonfrombirmingham on Jun 11, 2013 11:21 PM Helpful
I keep my MBP connected to mains almost always... however, I have a reminder set up for every two weeks so that I'll remember to disconnect from mains and let my battery run down to about 30-40% before connecting to mains again. That keeps the battery healthy and happy - I've had this machine since March of 2012 and my battery health is 99% with 163 cycles. Good luck, Clinton

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