Hey Pat, as a nano + zune user, I guess I can definitely answer to your question here..I have used both players so far and both of them have averagely similar battery life..I feel like my Zune uses a little more battery though but that must be due to wireless syncing..Thing about Zune, I charged it one day, and then left it on my desk for a week with the hold button locked, and after a week, the battery didnt get used up even a little..If you will have access to your laptop/PC in the next 24 hours, then you can be assured your player will run fine with you :)
Have you upgraded to the latest firmware Karen? The new firmware manages the battery much better. Also, for the first few usages, the battery will not yet utilise its full potential. Make sure you empty it fully before charging it. After a few usages, you will get its optimum performance. If you continuously use it, you should easily get about 12hours of music. But if you turn on and off occasionally, it will draw the battery faster. Also, remember that the wireless is always using the battery too. Turn it off for more listening time :) I hope that helps.
To really preserve battery life, turn off your zune while you're not using it. Press the back button and press and hold down on the zune pad at the same time fo 5-10 seconds and the zune will turn off instead of just going to sleep. To turn on push the play/pause button. Whatever you do, DO NOT Press and hold the play/pause button and the back button at the same time because this will reset your zune (delete everything). I learned this the hard way.
I have owned Zune 80 GB for the past 3 years. It worked fine initially. It stayed unused for the, past year or more. Now that I want to use again, it is giving me a lot of problems. It took hours for the screen to even light up when I started to charge. The battery is draining dead after being fully charged in hold or off position. It is abruptly shutting off while playing music, if I touch any button for >>, << or pause. I cannot turn it on unless I connect it to the computer. Does anybody know what is going on? .........Ms. Espee.