iPod Touch won't charge

[Ronbonbeno]

It was getting low so I decided to charge it but it wouldn't so i was like well I guess its time for a new charger but just to be sure its the cord I tried it on my older boke ipod and it charged and then I tried it on my iPod nano and that charged too.

Is this probably a hardware issue, will I have to take it in to the apple store?
Will they fix it for free, there is no signs of dropping or anything. I've had it for maybe like 2 years. More than a year for sure.