Got a tip for us?
Let us know
Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
Battery Health (not Charge)
- Thread starter beginner0
- Start date
- Sort by reaction score
the day the battery left the factory it was on a downhill slide
this is normal
Enjoy your new Mac
this is normal
Enjoy your new Mac
Try not to drain you battery to 0% every time, it kills it fast. Keep it as cool as possible, i.e. take it out of the computer when it is plugged in to mains power. Do both of these things and your battery should last a good few years.
You're not saying the same thing ("every time ... why not? ... once every 2 months").
Apple do recommend the one-to-two monthly drain/recharge as liketom said.
Is there any data published about regular full drain/recharge cycles killing the battery?
I dunno about taking the battery out though. It leaves the connectors awfully vulnerable to the outside elements.
yep i'm sure your right there MJ, moisture in the air will no doubt help corode the connectors quicker
Is this normal? I have done 9 cycles, two which ended up be the calibration method. First calibration was on purpose, the second was a mini one. It just happend to die when I was about to go to bed, and I didn't want to leave the charger plugged in for so many hours. thinking it was a bad thing. but anyway, maybe battery is at 95% health.. yesterday was 96%. I have had the laptop for maybe about a week. when i got the battery it was 98% health... Coconut battery said it was 4 weeks old, so im guessing thats when the battery was first put in?
It's not necessarily bad to leave the charger plugged in for many hours. In fact, it's arguably good for the battery. 
Overcharging a battery will harm it. Your Mac laptop has mechanisms in place to prevent overcharging. Treat the machine well as outlined in this thread and it won't happen.
your macbook will automatically stop charging when it is fully charged. if you have coconutbattery it'll even show that it is no longer charging when fully charged and your macbook will just run off of the power adapter.
yup thats normal.
the question here is about battery health - I've had my mbp for two plus weeks and my health on istat still says 100%....
2 Month old MB at 94% health
I have had my 2.16 Ghz for about two months now and coconut says that my battery health is down to 94%. What gives? Battery life is decent I guess but the health has been ever decreasing since the day I got it when it was at 5180 mAH, now it sits at 4903 mAH.
As you can see from below, It only has 6 cycles!
I have had my 2.16 Ghz for about two months now and coconut says that my battery health is down to 94%. What gives? Battery life is decent I guess but the health has been ever decreasing since the day I got it when it was at 5180 mAH, now it sits at 4903 mAH.
As you can see from below, It only has 6 cycles!