Table 17. Battery specifications (continued)
Description Values
Temperature range:
Operating
● Charge: 0 °C to 50 °C (32 °F to 122 °F)
● Discharge: 0°C to 70°C (32°F to 158°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)
NOTE: Control the charging time, duration, start and
end time, and so on using the Dell Power Manager
application. For more information about Dell Power
Manager, search in the Knowledge Base Resource at
www.dell.com/support.
3 hours (when the computer is off)
Coin-cell battery
Not supported
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.
CAUTION: Dell recommends that you charge the battery regularly for optimal power consumption. If your
battery charge is completely depleted, connect the power adapter, turn on your computer, and then restart
your computer to reduce the power consumption.
Display
The following table lists the display specifications of your Latitude 9440 2-in-1.
Table 18. Display specifications
Description Values
Display type
14-inch, QHD+, touch, corning gorilla glass victus DXC, 500
nits, IPS, battery-saving, Active pen support
Touch options
Yes
Display-panel technology
Comfort view plus low blue Light
Display-panel dimensions (active area):
Height
188.49 mm (7.42 in.)
Width
301.59 mm (11.87 in.)
Diagonal
355.64 mm (14.00 in.)
Display-panel native resolution
2560 x 1600
Panel type True 8 bits
Luminance (typical)
500 nits
Megapixels 4.09
Color gamut
sRGB 100%
24 Specifications of Latitude 9440 2-in-1
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