macbook pro battery calibration and health
previous to my macbook i had an HP laptop and the battery lasted 15 minutes.. so to learn more about my battery
i downloaded istat, and coconut battery since i heard about them being pretty good.
i wanted to maintain my battery to be its best.
i enjoyed a couple of weeks with 100% battery health according to coconut battery, but istat was always 1 percent below what coconut battery said.
so coconut battery = 100%, istat = 99%
every month i calibrate my battery: i charge it fully then leave it plugged in and charge for two hours then unplug and use it until it runs out, then let it rest for 5 hours or more then charge it all the way again.
for the past week or couple of weeks i noticed my battery slip from 100 to 99%
this got me upset (since im a stickler with my electronics) so i calibrated and it didn't go back to 100, which i thought was going to happen after i calibrated it again.
a week later i turn on my macbook and its now at 97% now im getting freaked out.
i don't know what im doing wrong.. usually i plug it in then unplug it after its full then charge it again to 100 then unplug it then go to sleep. but after that drop to 98 percent i started to just keep it plugged in thinking it would be better for the battery.. but now its 97 percent.. so i don't know what to do..
if i calibrate it again would it go back to 100 percent health?
is it normal for a 3 month old macbook to be at 97 percent already?
i have 84 charge cycles if this info will help.
please give me feedback! i want to bring it back to 100 if possible and i wanna if the problem is w/ my battery
macbook pro 13 inch, Mac OS X (10.6.2)