When i use my ipod charging does the battery usually goes low or it drains? Do i have to fix it or something?

I do not understand what you are saying? Is English your native language

Are you saying that if you iPod is connect to a charging source and you are using the iPod the battery does not charge?

Does it charge when you are not using the iPod?

Have you tried another charging source? Maybe the charging source does provide sufficient power/current.