If I may add my thoughts and results....
I have the original 10GB iPod and bought it in October giving me about 6-7 months. A little shorter than other users here but there's not much I can do about that
Anyways I also own a Palm m505 PDA and was really obsessed with the internal "non-replaceable" battery that was in it. I would try to scheme and dodge my way to better battery preservation. It mostly ended up giving me stress and headaches (I've had it for over a year and it still runs fine, even though I hardly use it anymore
)
So when I got the iPod I decided to be more like an unconcerned user and simply used my iPod how and when I wished, recharging it how and when I wished. I didn't try to top it off every day, but would not let it drain completely often. Just a couple of weeks ago I tested the play life by charging it, turning it on and letting it run till it died. My recorded playback time was right around 10h15m. Very good considering that my music is all mp3 alt preset extreme with average bitrates around 220-230kbps.
Conclusion? My battery seems to be ok- and it doesn't seem like it has started to falter at all. I would definately say that I have not mistreated the battery in any way, but merely have dictated its charging to support my desired usage, not the other way around as I tried to do with my pda. The end result ended up being about the same.
Here's some quick calculations just for the fun of it....
Let's assume you bought the new 15GB iPod- $400.
Use it at 8 hours per charge, 1000 charges per battery. After the battery fails you go and buy a new iPod.
Total playtime was 8*1000=8000 hours. It cost you $400. That means $400/8000h=$0.05 per hour.
If you buy the $50 iPod battery replacement then it's $50/8000h= 0.6 cents per hour
Now say the iPod was driven by alkalines. Since the iPod's 830maH battery is closer in capacity to AAA batteries than they are to AA, I will assume you need to plop 2xAAA batteries in the iPod and get 10 hours of playtime.
Now run the AAA powered iPod for 8000 hours. 8000h/10h per use is 800 battery changes. A quick check on BestBuy.com reveals that an 8-pack of AAA batteries (4 changes) is $5.99. In order to get your 800 battery changes you need 200 packs (200*8=1600 batteries. At 2 batteries per change that is 800 changes) of batteries. 200*$5.99=$1497.50
$1497.50/8000h = 18.7 cents per hour.
You tell me which is more money.
Yes the battery is an issue but try not to get so worked up about small things like this. We all have more important things to worry about than iPod batteries.
Ruahrc
(hope the math is right
)