iPod touch my ipod touch battery keep up and down %

[iphonetoday]

hi all...
i dont know what i have to say , but anyway this is what going on
today i purchase new ip touch 4th in best buy store brand new
i have battery issue my battery go down to fast from 50 % to 20 %
sometime it just raise up 60 % after reboot , if i just play touch battery wont go down as much but if i make skype call or facetime call , it drain so fast then i have to end call then battery jump up again

how to fix this issue ?

i dont like to restore fw because all setting so long to do it , all game,app is on it ...

thanks

 

[xlii]

Charge your iPod Touch to 100%. Now see how long it takes to discharge as you use it during the day. The battery percentage shouldn't jump around. It should start at 100% and ramp down as the machine is being used. If you think the battery isn't lasting as long as apple says it should... you might have a defective battery. If that is the case you can return it to the store and get another seeing how you only just purchased it.

There are things you can turn off (if you are not using them) that will make the battery last longer.

If you are not using location services turn it off.
If you are not using wifi turn it off.

 

[iphonetoday]

maybe return get a replace another one if restore fw not work for it