IPod nano is starting to wreck my brains

Hey everyone this is my first post. I have an iPod nano n it used 2 work perfectly until I forgot it in my cupboard 1 day for a few years. Today while moving houses I found it n decided 2 put it on n put some new music on it...now when I plugged it to my laptop I downloaded iTunes (V11) n plugged it in. It picked up on my computer but not iTunes so I looked at the screen and it said connected but the battery bar goes half and empty then green and empty so I went out and bought a usb wall charger for it and when I plug it in it shows a battery on it but soon dissapears after a second and says please turn off power...what does this mean?

via iLounge Forums http://ift.tt/1b82jV6