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Dell Latitude 7400 2-in-1 Setup and specifications guide

Battery

Table 1. Battery SpecificationsBattery Specifications
FeatureSpecifications

Type

  • 52 WHr lithium-polymer 4 cell battery
  • 78 WHr lithium-polymer 6 cell battery

Dimension

  1. 52 WHr
    • Length: 250 mm (9.84 inch)
    • Width: 85.80 mm (3.38 inch)
    • Height: 4.99 mm (0.20 inch)
    • Weight: 236.00 g (0.52 lb)
  2. 78 WHr
    • Length: 301.67 mm (11.88 inch)
    • Width: 111.36 mm (4.38 inch)
    • Height: 9.09 mm (0.36 inch)
    • Weight: 340 g (0.75 lb)

Weight (maximum)

  1. 52 WHr - 236 g (0.52 lb)
  2. 78 WHr - 340 g (0.75 lb)

Voltage

  • 52 WHr - 7.6 V
  • 78 WHr - 11.4 V

Life span

52 WHr - 300 discharge/recharge cycles

Charging time when the computer is off (approximate)

  • 0~15°C: 4 Hours
  • 16~45°C: 2 Hours
  • 46~60°C: 3 Hours

Operating time

  1. 52 WHr - >= 14 Hours
  2. 78 WHr - >= 24 Hours
NOTE Operating time varies depending on operating conditions and can significantly reduce under certain power-intensive conditions,

Temperature range: Operating

  • Charge: 0°C to 45°C (32°F to 113°F)
  • Discharge: 0°C to 70°C (32°F to 158°F)

Temperature range: Storage

-20°C to 65°C (-4°F to 149°F )

Coin-cell battery

ML1220

Dell Power Manager Capable

Yes, DPM 3.0


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