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Feb 19, 2016 5:38 AM in response to Aztec1998by KimUserName,★HelpfulTry the following tech note. About Mac notebook batteries - Apple Support
Also this program is helpful for monitoring your battery health. http://www.coconut-flavour.com/coconutbattery/
Kim
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Feb 19, 2016 5:37 AM in response to Aztec1998by dwb,★HelpfulThere’s a program on your computer called Activity Monitor. Open it and click on the CPU tab. Then click in the %CPU column so that the services are listed in order of CPU usage from highest to lowest. Keep an eye on that monitor from time to time as you are using the computer. It will give you an idea of what processes are running hot, that is using a lot of CPU cycles. Keep in mind that what you consider light use may not be at all. For example, simply surfing the Internet reading a few blogs seems like light usage but if you use Chrome it isn’t light. Chrome is resource hungry even if it is sitting in the background doing nothing. Keeping an eye on the Activity Monitor will show you whether the “light” programs really are light. It can also reveal rogue resources you didn’t know you had.
Just for reference, using my rMBP for surfing, email, and writing I can get 6-7 hours with no trouble. While I’m working the CPU usage may briefly spike over 50% or even higher but just as quickly fall back down. Anything that is consistently using more than 15% of the CPU is power hungry and helping drain your battery.
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Feb 19, 2016 7:05 AM in response to Aztec1998by dwb,kernel task is the lowest level of the OS and it isn’t taking up a big chunk. In fact what I see right now is a typical healthy computer. Keep an eye on it over the next few days as well as keeping an eye on battery usage. If you don’t see any processes jumping up and staying there for a lengthy period then it is time to look elsewhere if your battery life doesn’t improve. If you do see any processes going high and staying there make a note of them and let us know what they are.
