If you noticed that there's no percentage next to your battery. WHY?
Cause Apple decided to be an exclusive to iPhone 3GS
But in Cydia, we got that fixed
1) First go to Cydia and tap search
2) Type in "iPhone-" and select the first one in the "I" section
3) Install and return to Search
4) Type in asBattery and install
5) REBOOT YOUR iPhone or iPod Touch
-Turn off iPod and turn it back on
6) Go to Settings and go on General, then go to Usage and turn on Battery Percentage