VAIO User Guide
Page 82
Replace the battery only with a CR2032-type lithium battery. Page 82 About the Lithium Battery The lithium battery starts to weaken after several years and the system settings, such as the date and time stored in CMOS RAM, may become inaccurate. There is danger of the battery exploding if it is replaced incorrectly. Replace the lithium battery when this occurs.
Replace the battery only with a CR2032-type lithium battery. Page 82 About the Lithium Battery The lithium battery starts to weaken after several years and the system settings, such as the date and time stored in CMOS RAM, may become inaccurate. There is danger of the battery exploding if it is replaced incorrectly. Replace the lithium battery when this occurs.