That "turtle" looks like someone took a perfectly good turtle and partially melted it.
Sadly, my Roomba has gone to that great lint free shag carpet in the sky. It lost the ability to understand when its battery was charged or not. Sad times.
On a completely unrelated note, anybody want to buy a Roomba? Handyman special!
Did you try a new rechargeable battery for your little friend? The battery may just be worn out. When they get old, they don't hold much of a charge even when they show full.