iPod touch wi-fi battery usage

[BennyK]

If I have wi-fi on but am not using it (example, I am listening to music) and the wifi indicator is there but they are grey bars (instead of blue that shows the signal strength), am I still using more battery usage than needed? Am I still sucking up lots of battery because wifi is on but not used? Thanks

 

[RandomHero180]

If you are not using the internet at all, not for mail or anything turn wifi off, i do at least, you will save so much battery, especially if you are not on a wifi network, because it is constantly checking the internet connection and if you have push on to get your email, it is doing that as well...