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Could you clarify how you arrived at 84% battery health? After the command "ioreg -l -n AppleSmartBattery -r" I see DesignCapacity, but where does the other num

Could you clarify how you arrived at 84% battery health? After the command "ioreg -l -n AppleSmartBattery -r" I see DesignCapacity, but where does the other number (5629) come from? I'd like to compute battery health myself...

bluedino 11y ago
He's just dividing the current battery capacity by the 'new' battery capacity. You can just let a program like Coconut Battery do it for you.
- mauz0r 11y ago
  Coconut Battery is nice. You can let it take snapshots and compare it with other batteries online. You can view my battery health here http://ccbonline.coconut-flavour.com/index.php?bid=d78a6c124d5a70bceb8e25bca21ddc0e http://ccbonline.coconut-flavour.com/index.php?bid=d78a6c124.... I try to unplug at 100% and recharge it at 10-20%. Once per month I drain it all the way to 0%. After reading this thread I try to keep my battery at a 50-80% charge :) Except when I do some CPU intensive stuff like compiling or rendering, then it is being charged thought the process.
jffry 11y ago
running ioreg -l -n AppleSmartBattery -r | grep -i capacity gives me "MaxCapacity" = 8329 "CurrentCapacity" = 8002 "DesignCapacity" = 8440 I'm guessing MaxCapacity or CurrentCapacity (I'm at 100% charged on a ~1 year old MBP, so I don't know which number is appropriate)
- ChristianBundy 11y ago
  Your battery percentage is going to be: 100 / DesignCapacity * MaxCapacity Or, in the way that makes way more sense to me: MaxCapacity / DesignCapacity * 100 Which, with your results, yields something to the effect of: 98.68% It's kind of (read: very) dirty looking, but you can get the same result with: echo $(ioreg -l -n AppleSmartBattery -r | grep MaxCapacity | awk '{print $3}') / $(ioreg -l -n AppleSmartBattery -r | grep DesignCapacity | awk '{print $3}') \* 100 | bc -l
  - cgabios 11y ago
    ioreg -l -n AppleSmartBattery -r | awk '/MaxCapacity/{mc=$3};/DesignCapacity/{dc=$3};END{print 100*mc/dc}'
    - critiq 11y ago
      mine is at 103.211

bluedino 11y ago

He's just dividing the current battery capacity by the 'new' battery capacity. You can just let a program like Coconut Battery do it for you.

mauz0r 11y ago
Coconut Battery is nice. You can let it take snapshots and compare it with other batteries online. You can view my battery health here http://ccbonline.coconut-flavour.com/index.php?bid=d78a6c124d5a70bceb8e25bca21ddc0e http://ccbonline.coconut-flavour.com/index.php?bid=d78a6c124.... I try to unplug at 100% and recharge it at 10-20%. Once per month I drain it all the way to 0%. After reading this thread I try to keep my battery at a 50-80% charge :) Except when I do some CPU intensive stuff like compiling or rendering, then it is being charged thought the process.

jffry 11y ago

running ioreg -l -n AppleSmartBattery -r | grep -i capacity gives me "MaxCapacity" = 8329 "CurrentCapacity" = 8002 "DesignCapacity" = 8440 I'm guessing MaxCapacity or CurrentCapacity (I'm at 100% charged on a ~1 year old MBP, so I don't know which number is appropriate)

ChristianBundy 11y ago
Your battery percentage is going to be: 100 / DesignCapacity * MaxCapacity Or, in the way that makes way more sense to me: MaxCapacity / DesignCapacity * 100 Which, with your results, yields something to the effect of: 98.68% It's kind of (read: very) dirty looking, but you can get the same result with: echo $(ioreg -l -n AppleSmartBattery -r | grep MaxCapacity | awk '{print $3}') / $(ioreg -l -n AppleSmartBattery -r | grep DesignCapacity | awk '{print $3}') \* 100 | bc -l
- cgabios 11y ago
  ioreg -l -n AppleSmartBattery -r | awk '/MaxCapacity/{mc=$3};/DesignCapacity/{dc=$3};END{print 100*mc/dc}'
  - critiq 11y ago
    mine is at 103.211