i have notice that the battery indicator blink, then the battery icon has red x, does that mean my battery died?

[corneto7]

Orange blinking batt indicator, unrecognized battery icon

 

[hang-the-9]

Sounds like a bad battery yes. You can find out from the laptop vendor support site or contacts what the status lights mean. Usually a fast blink means dead battery and a slow blink means charging or low.