So I found all the threads where people claim that battery health fluctuation is completely normal, but none of them seem to explain why this occurs. Can anyone explain the physical reasoning behind why battery health would go from 93% down to 88% and back up to 97% over the course of a few weeks?
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Why does battery health fluctuate?
- Thread starter riptideMBP
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Well, I am quite sure the 'internal measuring stick' is trying to gauge What you Do, When you Do It and For How Long.. it is accordingly extrapolating a bunch of DATA and then showing a somewhat arbitrary number..
Although really not like a Fuel Economy Gauge (or Battery % Level) it is kinda similar I would think.. Overtime it just evens out.. and no matter what, USE your Computer and don't worry about it.. It will likely take more years off some people's lives than the battery itself!!
Although really not like a Fuel Economy Gauge (or Battery % Level) it is kinda similar I would think.. Overtime it just evens out.. and no matter what, USE your Computer and don't worry about it.. It will likely take more years off some people's lives than the battery itself!!
thats actually quite good... my 2011 MBP is on 85 charge cycles and the health is at 96% sometimes it changes to 97% or 94%.
That's the thing. It seems too good to be true. I've recalibrated and everything. It just doesn't make sense!
Because battery readings are estimates, and as such, are not 100% accurate.
No, there is no "standard" battery health.
The built-in batteries in the newer Mac unibody notebooks come pre-calibrated and do not require regular calibration like the removable batteries.
This should answer most, if not all, of your battery questions:
Except your battery health doesn't fluctuate due to illness or disease or anything that indicates a problem. It's simply an inaccurate estimate.
The activity of electrons in each cell is always going to vary randomly, and resistors and capacitors throughout the circuit have a degree of error. In fact, there are so many small things that contribute to an inaccurate reading.
I don't know if it's good or not, but on my Late 2008 Macbook Unibody, I'm at 1997 Cycle Count and the condition is normal...
It's alive!!!
Well, kind of, the battery health will fluctuate like other things based on environment, current state, etc.