Battery
Table 21. Battery Specifications
Feature
Specifications
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
System specifications
21
