My 8-year-old iPod classic still works but I called an Apple repairer this week to order a new battery. shocked to find the battery can't be replaced and the only options are buy a refurb from Apple or just throw mine away when the battery dies. What a stupid waste if the rest of it still works. Has anyone here bought a refurb? Do you know if the battery in these is brand new? I mostly use mine in the car and can keep it plugged into power but concerned about what might happen with the old battery then as it dies ... is there any danger of it leaking or exploding or something?