Dell P57G Manual page 22

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Battery
Type
Dimensions:
Width
Depth
Height
Weight (maximum)
Voltage
Charging time when the computer is off
(approximate)
Operating time
Life span (approximate)
Temperature range:
Operating
Storage
Coin‑cell battery
Dimensions and System
Weight Information
Media‑Card
Display
Reader
Specifications
3 cell
77.20 mm (3.04 in)
254 mm (10 in)
6.80 mm (0.27 in)
0.25 kg (0.55 lb)
11.4 VDC
Within 4 hours
Varies depending on operating conditions and can significantly reduce under
certain power‑intensive conditions.
300 discharge/charge cycles
0°C to 35°C (32°F to 95°F)
–40°C to 65°C (–40°F to 149°F)
CR‑2032
Ports and
Memory
Connectors
Keyboard Camera
Communications Video
Touchpad Battery
Audio Storage
Computer
Power Adapter
Environment