Table 16. Power adapter specifications (continued)
Description
Option one
Option two
●
15 VDC
●
20 VDC
●
15 VDC
●
20 VDC
Temperature range:
Operating
0°C to 40°C (32°F to 104°F)
0°C to 40°C (32°F to 104°F)
Storage
-40°C to 70°C (-40°F to 158°F)
-40°C to 70°C (-40°F to 158°F)
Dimensions
Width (mm/inch)
112 mm (4.41 in.)
130 mm (5.1 in.)
Depth (mm/inch)
51 mm (2.01 in.)
66 mm (2.6 in.)
Height (mm/inch)
28 mm (1.1 in.)
22 mm (0.8 in.)
Weight (kg/lb)
201 g (0.44 lb)
291 g (0.64 lb)
Battery
Table 17. Battery specifications
Specifications
Option 1
Option 2
Type
4-cell, 63 WHr, optional
with ExpressCharge or
Long Life Cycle
3-cell, 42 WHr, optional
with ExpressCharge or
Long Life Cycle
Voltage (VDC)
11.40 VDC
15.2 VDC
Weight (maximum)
0.212 kg (0.467lb)
0.264 kg (0.582lb)
Dimensions:
Height
92.8 mm (3.654 in.)
92.8 mm (3.654 in.)
Width
238 mm (9.37 in.)
238 mm (9.37 in.)
Depth
5.7 mm (0.224 in.)
5.7 mm (0.224 in.)
Temperature range:
Operating
●
Charging: 0°C to 45°C (32°F to 113°F)
●
Discharging: 0°C to 65°C (32°F to 149°F)
Storage
-20°C to 60°C (-4°F to 140°F)
Battery Operating time
Varies depending on operating conditions and can
significantly reduce under certain power-intensive
conditions.
Battery Charging time (approximate)
●
ExpressCharge Boost (0% up to 35% ) : 20
minutes
●
Express charge : 2 hours
●
Standard charge: 3 hours
NOTE:
Control the charging time, duration,
start and end time, and so on using
the Dell Power Manger application. For
more information on the Dell Power Manger
Specifications of Latitude 7420
21
