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