Rechargeable battery included inside the player is not replaceable

[johnetx]

That’s a great suggestion, I only wish Sandisk would not just mention using a wall charger but to strongly encourage users to use a wall charger.  The owner’s manual says you can charge it using the computer’s usb port, and also wall or car chargers.  Well most buyers already have the pc, so NATURALLY that’s what most users are going to plug the player into.  Sandisk really ought to advise customers “TO PROLONG THE LIFESPAN OF THE OLED DISPLAY, USE OF A WALL CHARGER IS HIGHLY RECOMMENDED.”  That would get the message across to your everyday user, which could help avoid the disappointment of the suddenly disappearing display.