1 hours
No. A battery is physical and cannot be downloaded as software.
no...
The iPod Touch will eventually run out of battery when it is locked, but it will not drain instantly.
if your ipod is a 4gen, yes
To sync the content and apps on one iPod touch to another, connect the new iPod touch to iTunes, and click restore from backup rather than choosing to set up a new iPod. If you put a password on your backup, enter that now. Then, wait for all of your content, settings, media and apps to sync to your new iPod touch. You can also do this between iPod touch 2nd, 3rd, and 4th generation and iPhones.
No
To replace an iPod touch battery you would have to send it out to Apple inc.
No. However, there are apps that can tell you your iPod's battery life percentage.
You can't replace the battery
You cant replace the battery.
Just look at the top right hand corner of the iPod Touch screen, and that is where the battery symbol is. There are also apps that monitor battery level.
Yes you can. Make a back up of the files through iTunes and then on the other ipod perform a restore from backup