Dell XPS 14 (L421X, Mid 2012) - Manual (Page 5)

Touchpad
X/Y position resolution
(graphics table mode) 240 cpi
Size (sensor-active area)
Height 71.50 mm (2.82 inches)
Width 99.00 mm (3.90 inches)
Battery
Type 8-cell “smart” lithium ion (69 WHr)
Height 11.95 mm (0.47 inch)
Width 328.10 mm (12.92 inches)
Depth 95.80 mm (3.77 inches)
Weight 0.42 kg (0.93 lb)
Voltage 14.80 VDC
Charge time
(approximate) less than 4 hours (when the computer is turned off)
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
Coin-cell battery CR-2032
AC Adapter
Type 65 W
Input voltage 100 VAC — 240 VAC
Input current
(maximum) 1.70 A
Input frequency 50 Hz — 60 Hz
Output current
(continuous) 3.34 A
Output power 65 W
Rated output voltage 19.50 +/- 1 VDC
Temperature range
Operating 0 °C to 40 °C (32 °F to 104 °F)
Storage –40 °C to 70 °C (–40 °F to 158 °F)