Dell Latitude D420 - Manual (Page 77)

Fingerprint Reader (optional)
Type UPEK TCS3 TouchStrip™ strip sensor with CMOS
active capacitive pixel-sensing technology
Power Supply 2.7 V to approx. 3.6 V
Connector 48-ball BGA
Array Size 248 x 2 pixels
Type UPEK TCS3 TouchStrip™ strip sensor with CMOS
active capacitive pixel-sensing technology
Touch Pad
X/Y position resolution (graphics table mode)
240 cpi
Size:
Width 64.88 mm (2.55-inch) sensor-active area
Height 48.88-mm (1.92-inch) rectangle
Battery
Type 9-cell hybrid lithium ion (68 WHr)
6-cell "smart" lithium ion (42 WHr)
4-cell "smart" lithium ion (28 WHr) (optional)
Dimensions:
Depth 77.5 mm (3.05 inches)
Height 19.5 mm (0.76 inch)
Width 123.4 mm (4.86 inches)
Weight 0.32 kg (0.70 lb) (6 cell) 0.23 kg (0.52 lb) (4 cell)
Voltage 14.8 VDC (4 cell)
11.1 VDC (6 cell)
11.1 VDC (9 cell)
Charge time (approximate):
Computer off approximately 1 hour for 80 percent charge for 4 and
6 cell.
Operating time varies depending on operating conditions and can be
significantly reduced under certain power-intensive
conditions.
See Battery Performance for more information.
Life span (approximate) 300 discharge/charge cycles
Temperature range:
Operating 0° to 35°C (32° to 95°F)
Storage –40° to 65°C (–65° to 149°F)
AC Adapter
Input voltage 100–240 VAC
Input current (maximum) 1.5 A
Input frequency 50–60 Hz
Output current 3.34 A (65-W AC adapter)
4.62 A (90-W AC adapter)
Output power 65 W
90 W
Rated output voltage 19.5 VDC
Dimensions and weight (65-W AC adapter):
Height 28.3 mm (1.11 inches)
Width 57.8 mm (2.28 inches)
Depth 137.2 mm (5.40 inches)
Weight (with cables) 0.36 kg (0.79 lb)
Dimensions and weight (90-W AC adapter):
Height 34.2 mm (1.35 inches)