Dell Latitude 7280 - Audio Specifications; Battery Specifications

Audio specifications
Feature Specification
Types Four-channel high-definition audio
Controller Realtek ALC3246
Stereo
conversion
24-bit—analog-to-digital and digital-to-analog
Internal interface High-definition audio
External
interface
Microphone-in, stereo headphones, and headset combo connector
Speakers Two
Internal speaker
amplifier
2 W (RMS) per channel
Volume controls Hot keys
Battery specifications
Feature
Specification
Type
● 3-cell Lithium Prismatic battery with ExpressCharge
● 4-cell Lithium Prismatic battery with ExpressCharge
42 WHr (3–cell):
Length 200.5 mm (7.89 inches)
Width 95.9 mm (3.78 inches)
Height 5.7 mm (0.22 inch)
Weight 185.0 g (0.41 lb)
Voltage 11.4 VDC
60 WHr (4–cell):
Length 238 mm (9.37 inches)
Width 95.9 mm (3.78 inch)
Height 5.7 mm (0.22 inch)
Weight 270 g (0.6 lb)
Voltage 7.6 VDC
Life span 300 discharge per charge cycles
Temperature
range
Operating
● Charge: 0°C to 50°C (32°F to 158°F)
● Discharge: 0°C to 70°C (32°F to 122°F)
Non-operating - 20°C to 65°C (- 4°F to 149°F)
Coin cell battery 3 V CR2032 lithium coin cell
System specifications 51