noexprnce

I was changing the struts on my 99 Forester this past winter. It was bitter cold and my work schedule made the project take a long time. When I finished the project the battery was dead. I jumped the battery and now the marker lights flash and the dashboard lights flash as well. The car has well over 250000 miles on it and used mainly as an about town car for the family...no long trips. Are the flashing lights the result of a bad battery..it is very old or is this potentialy a more serious problem?

Have a 1999 Forester and want to keep it running...has lived a long life but a litle rough from use