Table 16. Power adapter specifications(continued)
Description Option one Option two Option three
● 15 V/3 A
● 9 V/3 A
● 5 V/3 A
● 15 V/3 A
● 9 V/3 A
● 5 V/3 A
● 15 V/3 A
● 9 V/3 A
● 5 V/3 A
Rated output voltage
● 20 VDC
● 15VDC
● 9 VDC
● 5 VDC
● 20 VDC
● 15VDC
● 9 VDC
● 5 VDC
● 20 VDC
● 15VDC
● 9 VDC
● 5 VDC
Temperature range:
Operating 0°C to 40°C (32°F to 104°F) 0°C to 40°C (32°F to
104°F)
0°C to 40°C (32°F to 104°F)
Storage -20°C to 70°C (-4°F to
158°F)
-40°C to 70°C (-40°F to
158°F)
-40°C to 70°C (-40°F to
158°F)
CAUTION: Operating and storage temperature ranges may differ among components, so operating or storing
the device outside these ranges may impact the performance of specific components.
Battery
The following table lists the battery specifications of your Latitude 7440.
Table 17. Battery specifications
Description Option one Option two Option three Option four
Battery type
2-cell, 38 Wh, lithium
ion, ExpressCharge™
3-cell, 57 Wh, lithium ion,
ExpressCharge™
2-cell, 38 Wh, lithium
ion, Long Lifecycle,
ExpressCharge™
3-cell, 57 Wh, lithium
ion, Long Lifecycle,
ExpressCharge™
Battery voltage
7.60 VDC 11.40 VDC
7.60 VDC 11.40 VDC
Battery weight
(maximum)
0.156 Kg (0.34 lb) 0.227 kg (0.50 lb)
0.156 Kg (0.34 lb) 0.227 kg (0.50 lb)
Battery dimensions:
Height
6.30 mm (0.24 in.) 6.30 mm (0.24 in.)
6.30 mm (0.24 in.) 6.30 mm (0.24 in.)
Width
210.97 mm (8.30 in.) 254.8 mm (10.03 in.)
210.97 mm (8.30 in.) 254.8 mm (10.03 in.)
Depth
79.80 mm (3.10 in.) 79.8 mm (3.10 in.)
79.80 mm (3.10 in.) 79.8 mm (3.10 in.)
Temperature range:
Operatin
g
● Charge: 0°C to
45°C (32°F to
113°F)
● Discharge: 0°C to
70°C (32°F to
158°F)
● Charge: 0°C to 45°C
(32°F to 113°F)
● Discharge: 0°C to
70°C (32°F to 158°F)
● Charge: 0°C to
45°C (32°F to
113°F)
● Discharge: 0°C
to 70°C (32°F to
158°F)
● Charge: 0°C to
45°C (32°F to
113°F)
● Discharge: 0°C
to 70°C (32°F to
158°F)
Storage
-20°C to 65°C (-4°F
to 149°F)
-20°C to 65°C (-4°F to
149°F)
-20°C to 65°C (4°F
to 149°F)
-20°C to 65°C (4°F
to 149°F)
Battery operating time Varies depending on
operating conditions
and can significantly
Varies depending on
operating conditions and
can significantly reduce
Varies depending
on operating
conditions and can
Varies depending
on operating
conditions and can
Specifications of Latitude 7440 23
24 / 36 23 / 34 24 / 36
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