Sony VAIO VGN-FS920 Safety Information Manual page 10

Do not handle damaged or leaking lithium ion batteries.
Danger of explosion if battery is incorrectly replaced. Replace only
with the same or equivalent type recommended by the
manufacturer. Discard used batteries according to the
manufacturer's instructions.
The battery pack used in this device may present a fire or chemical
burn hazard if mistreated. Do not disassemble, heat above 140°F
(60°C) or incinerate. Dispose of used battery promptly. Keep away
from children.
10