Turn the system off for a while. When you reboot if the flashing is gone, the error is temporary. If it returns (which it likely will if the battery is original - the 9300 is at least a couple of years old, and likely well past the expected life of its battery) - it is not, and the battery needs replacement.
I have a Dell Inspiron B130, it's old, but it can still provide my basic requirements. It also experiences the "Temporary Battery Failure" flashing in the LED display. I had just recently replaced the battery by buying online. However, the flashing remains the same. The battery is brand new and a Non-Dell product bought from Ebay, I think the source is from New Jersey which I requested to be shipped here in the Philippines.
On the start menu tasbar in Windows XP, the battery indicated 67% percent charged (but is not charging) and it is under Normal Condition (Power Properties).
Hope I can get help here without having to return the battery back to New Jersey. Do you have accredited service centers here in the Philippines?