Roomba Schedular

Question

I have a Roomba Scheduler and it has worked great until recently. Suddenly it quit working. When it is charging the power light goes from red to green as it should, showing it is ready to use. When we turn it on to use, it will only go on for a few seconds then it shuts off like it is out of power. It is like it isn't really charged. Is there something I can try to make it work?