MBP battery not showing 7 hours anymore

petrucci666

macrumors 6502a
Original poster
Apr 30, 2009
706
4
Los Angeles, CA
I've had my 13" MBP for 2 months now and the 7 hour battery has been nothing but a benefit so far. However, I've noticed that the battery isn't showing the 7 or even the 6 hours mark anymore at 100% charge. My battery health is still at 100% and restarting the MBP hasn't helped fix this problem either.

Any ideas why this is so?
 

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dudeitsjay

macrumors regular
Mar 26, 2009
197
0
Well if you keep the settings consistent, the amps out per hr calculation is pretty accurate. So if you stabilized the computer and retained the same settings and maybe 5-10 minutes afterwards kept the timer, it should be what it predicts. I would get 7:30 on my battery icon calculation, and I would get that amount days on end.
 

jav6454

macrumors P6
Nov 14, 2007
16,872
1,530
1 Geostationary Tower Plaza
what am I doing worng here?
...
You are charging your battery wrong and hence killing it.

Do this for a week and watch your battery recover:

1. Use laptop until it hits 7-5% battery power left.
2. Recharge to a 100% state and leave it there for the remaining day
3. Use next day until you reach 5-7%
4. Repeat step 2-3.
 
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