Of course a new battery is almost certainly better than an old one. That's not what I'm asking about. I used the same battery in my Mac for five years but it sucked from day one really, only lasted 1.5h maximum in the beginning.
So I bought a new fresh one the other day and it last more than 5 hours!!! I am really surprised by this.
So there are three cases:
- I was really unlucky with the first battery.
- I am really lucky with the second battery.
- I was unlucky with the first battery and lucky with the second battery.
My question is: have the battery technology improved for the late 2008 unibody aluminum (and if so how?) and/or is one of the cases a,b,c true?
The batteries look identical with same numbers printed on their backside. The new one holds some 4300 mAh. The old one I don't know really since it's out of the computer now, but if I recall correctly it was about the same.
I think the difference between ~1h and ~5 hours is dramatic and I was (of course) very positively surprised.