Sony PCG-GRV670 - Manual (Page 14)

Notes on batteries
 Never leave the battery in temperatures above 140°F (60°C), such as under direct sunlight or in a car parked in the
sun.
 While the battery is in use or being discharged, the battery heats up. This is normal and is not cause for concern.
 Keep the battery away from all sources of heat.
 Keep the battery dry.
 Do not open or disassemble the battery.
 Do not expose the battery to any mechanical shock.
 Battery life is shorter in a cold environment because of decreased battery efficiency at low temperatures.
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