Dell Latitude 7280 Owners Manual - Page 46
Battery specifications, AC adapter specifications
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Feature Specification 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 Type 42 WHr (3-cell): Length Width Height Weight Voltage 60 WHr (4-cell): Length Width Height Weight Voltage Life span Temperature range Operating Non-operating Coin cell battery Specification • 3-cell Lithium Prismatic battery with ExpressCharge • 4-cell Lithium Prismatic battery with ExpressCharge 200.5 mm (7.89 inches) 95.9 mm (3.78 inches) 5.7 mm (0.22 inch) 185.0 g (0.41 lb) 11.4 VDC 238 mm (9.37 inches) 95.9 mm (3.78 inch) 5.7 mm (0.22 inch) 270 g (0.6 lb) 7.6 VDC 300 discharge per charge cycles • Charge: 0°C to 50°C (32°F to 158°F) • Discharge: 0°C to 70°C (32°F to 122°F) - 20°C to 65°C (- 4°F to 149°F) 3 V CR2032 lithium coin cell AC adapter specifications Feature Type Input voltage Input current- maximum Input frequency Output current Specification 65 W or 90 W 100 V AC to 240 V AC 1.7 A / 2.5 A 50 Hz to 60 Hz 3.34 A and 4.62 A 46 System specifications