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My battery went from 99% health to 95% within hours...

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orangeillini14

macrumors regular
Original poster
Yesterday I noticed my battery health was 95%. Today I noticed that it's at 95%. Should I be worried? I've had my MBP for a month and the lowest I've seen it go down was to 98%...
 
Its very normal. The battery health will change and go up and down during use. Its normal. Now if it dips below 90 and stays, then you have a problem.
 
orangeillini14 said:
Yesterday I noticed my battery health was 95%. Today I noticed that it's at 95%. Should I be worried? I've had my MBP for a month and the lowest I've seen it go down was to 98%...
Click to expand...

Sure you're not talking about the charge? If so, that's normal, as it will fluctuate and the charger will kick in when it gets below 95%.
 
Mine fluctuates a lot too. It has lost a % a day. I have kept it plugged in the whole time. The green light doesnt always stay on either. Not sure whats going on with mine. These batteries concern me as well. 😱
 
You might want to calibrate... after a couple calibrations mine stabilized @ 95% after 15 cycles (1st calibration was 5th cycle, 2nd 15th). Now it's at 94% after 102 cycles.
 
Zwhaler said:
My MBP is usually between 94-98. MacBook is always at 100%, even after 130+ cycles.
Click to expand...

Remember that the health percentage is measured against what the battery is rated for as a spec, but in practice the actual capacity of a fresh battery can deviate from unit to unit. Your MacBook battery is surely down a bit from when new, it's just that you have a battery that started life significantly above spec.
 
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