Audio Specifications; Battery Specifications - Dell Latitude 7280 Owner's Manual

Audio specifications

Feature Specification
Types Four-channel high-definition audio
Controller Realtek ALC3246
Stereo 24-bit—analog-to-digital and digital-to-analog
conversion
Internal interface High-definition audio
External Microphone-in, stereo headphones, and headset combo connector
interface
Speakers Two
Internal speaker 2 W (RMS) per channel
amplifier
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