Dell Alienware M18x R2 (Early 2012) - Manual (Page 6)

Camera
Camera resolution 2.1 megapixel
Video resolution 1920 x 1080 at 30 fps maximum
Diagonal viewing angle 66 degrees
Battery
12-cell “smart” lithium ion (97 Whr)
Height
30.20 mm (1.19 inches)
Width 174.0 mm (6.85 inches)
Depth 133.3 mm (5.25 inches)
Weight 0.65 kg (1.43 lb)
Voltage 12.0 VDC - 16.8 VDC
Operating time battery operating time varies depending on
operating conditions and can be significantly
reduced under certain power-intensive conditions.
Life span (approximate) 300 discharge/charge cycles
Temperature range
Operating 0°C to 50°C (32°F to 122°F)
Storage –20°C to 60°C (–4°F to 140°F)
Coin-cell battery CR-2032
Power adapter
Type 240 W/330 W
Input voltage 100-240 VAC
Input current (maximum)
240 W 3.50 A
330 W 4.40 A
Input frequency 50-60 Hz
Output current
240 W 12.30 A (continuous)
330 W 16.92 A
Output power 240 W/330 W
Rated output voltage 19.50 VDC