Dell Precision M40 - Manual (Page 82)

Dimensions (active area): 15.0 inches
Height 228.1 mm (9.0 inches)
Width 304.1 mm (12.0 inches)
Diagonal 380.1 mm (15.0 inches)
Maximum resolution/colors 1600 x 1200/32-bit color (UXGA)
Response time (typical) 50.0 ms (20 ms rise, 30 ms fall)
Refresh rate 60 Hz
Operating angle 0° (closed) to 180°
Viewing angles:
Horizontal ± 40°
Vertical +15°/–30°
Dot pitch 0.19 mm (15.0-inch UXGA)
Power consumption:
Panel (typical) 1.3 W
Backlight 3.4 W using battery, 4.9 W using AC adapter
Controls brightness can be controlled through a key combination
Keyboard
Number of keys 87 (U.S., Canada, Korea, Thailand, and locations that use traditional Chinese);
88 (Europe);
90 (Japan)
Key travel 2.7 mm + 0.3 mm/ – 0.4 mm
(0.11 inch ± 0.016 inch)
Key spacing 19.05 mm ± 0.3 mm (0.75 inch ± 0.012 inch)
Battery
Type 8-cell lithium ion (dual battery support is available via the modular bay)
Dimensions:
Height 21.5 mm (0.83 inch)
Depth 88.5 mm (3.48 inches)
Width 139.0 mm (5.47 inches)
Weight 8 cell: 0.39 kg (0.87 lb)
Voltage 14.8 VDC
Capacity 8 cell: 59.0 WH
Charge time (approximate) 1 :
Computer on 2.5 hr
Computer off 1 hr
Battery life 2 –4 hours minimum with 8-cell standard battery
Life span (approximate) 1 400 discharge/charge cycles