Just recently my Ipod Touch gen1 will not charge. When ever I plug it in it goes to the charging icon at the top for about a minute than it switches to the plugged in icon and stops charging. Ive tried multiple charge cables and multiple computers and USB ports along with different OS'. If I continually keep unplugging it and plugging it back in it does charge.It also has the newest firmware and I've tried restoring it a few times. Does this mean the battery is done?