Mustek Portable Dvd Players 90 Warranty Is A Joke Why Isnt My Portable Dvd Charging?

Why isnt my portable dvd charging? - mustek portable dvd players 90 warranty is a joke

I have a Mustek mp72 portable DVD player. It is customary to hold a charge at all. Pay for hours on or off. He works for a total time of 2 minutes to 15 hours! Im not sure what to do. Please help me
Thanks