RMBP and battery

Free Ale

macrumors member
Original poster
Mar 29, 2012
84
0
Hey guys,
Thanks for coming to help! I have the base Retina and I have some concerns about the battery.

- Is it bad to leave it plugged in past 100% (I have been charging to full and taking out)
- My battery health does go between 100%-97%, is this normal?
- Would it be bad to use the laptop playing games all day and maybe charge the laptop more than once daily?
 

GGJstudios

macrumors Westmere
May 16, 2008
44,419
758
- Is it bad to leave it plugged in past 100% (I have been charging to full and taking out)
No, it will not overcharge.
- My battery health does go between 100%-97%, is this normal?
It is perfectly normal if your battery health (maximum capacity) is more or less than 100%, even when brand new, or if it fluctuates up or down over time. For further details, read the CHECKING STATUS AND HEALTH section of the following link.

This should answer most, if not all, of your battery/charging questions:
- Would it be bad to use the laptop playing games all day and maybe charge the laptop more than once daily?
No, it's not bad to charge more than once daily, but if you have access to AC power, it's not necessary to run on battery. Run on battery whenever you need to and plug it in whenever you can. You can plug or unplug at any time, regardless of the charged percentage. Just make sure you don't run on AC power all the time, as your battery needs to be used regularly to stay healthy.
 

Free Ale

macrumors member
Original poster
Mar 29, 2012
84
0
No, it will not overcharge.

It is perfectly normal if your battery health (maximum capacity) is more or less than 100%, even when brand new, or if it fluctuates up or down over time. For further details, read the CHECKING STATUS AND HEALTH section of the following link.

This should answer most, if not all, of your battery/charging questions:

No, it's not bad to charge more than once daily, but if you have access to AC power, it's not necessary to run on battery. Run on battery whenever you need to and plug it in whenever you can. You can plug or unplug at any time, regardless of the charged percentage. Just make sure you don't run on AC power all the time, as your battery needs to be used regularly to stay healthy.
I was always told that running it on AC power was bad, Which it still does? So, If I used it at max charge with AC cable in for like 2 hours at a time then unplug it won't do any damage?
 

GGJstudios

macrumors Westmere
May 16, 2008
44,419
758
I was always told that running it on AC power was bad, Which it still does? So, If I used it at max charge with AC cable in for like 2 hours at a time then unplug it won't do any damage?
No. You can run on AC power for days at a time with no problems. Your battery needs exercise from time to time (running on battery power) to stay healthy, so as long as you're not exclusively running on AC, you'll be fine. Do read the Battery FAQ, as it will likely answer all the battery/power/charging questions you can think of.
 

Free Ale

macrumors member
Original poster
Mar 29, 2012
84
0
I have read that page. Wow, Lots of knowledge! Thanks everyone!