Hi zoran,
Welcome to Sony Community!
You can check the status of the battery by going to VAIO Control Center > Enter key > Power and Battery > Details. Here you can view the primary health status of the battery. If it shows POOR or CRITICAL battery replacement is needed.
Blinking fast in orange indicates that a battery error has occurred due to a failed battery pack, an unlocked battery pack (Removable battery pack supplied models)
We kindly recommend visiting our Sony Global Web site for information on contacting the Sony Support Center in your region at http://www.sony.net/SonyInfo/Support/.
Regards,
Jen
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