Dell Inspiron 7500 - Manual (Page 151)

Battery
AC Adapter
Environmental
Power:
Supply voltage 5 V ± 10%
Supply current 4 mA (maximum operating current)
Type lithium ion
Dimensions:
Height 23.8 mm (0.94 inch)
Depth 148.2 mm (5.83 inches)
Width 116.2 mm (4.58 inches)
Weight 0.66 kg (1.45 LB)
Voltage 14.4 VDC
Capacity 79 WH or 74 WH
Charge time (approximate)* 3.75 hours (computer on); 3.25 hours (computer off)
Operating time (approximate)* 2 to 3.5 hours with 1 battery;
4 to 7 hours with 2 batteries
Life span (approximate)* 400 discharge/charge cycles
Ambient temperature range:
Charge 0° to 40°C (32° to 104°F)
Discharge
0° to 60°C (32° to 140°F)
Storage - 20° to 50°C (-4° to 122°F)
* Battery performance features such as charge time, operating time, and life span can vary according to the
conditions under which the computer and battery are used.
Input voltage 100 to 240 VAC
Input current (maximum) 1.5 A at 90 VAC, full load
Input frequency 50 to 60 Hz
Output current 3.16 A (continuous)
Output power 70 W
Rated output voltage 19 VDC
Dimensions:
Height 30.0 mm (1.12 inches)
Width 62.0 mm (2.4 inches)
Depth 110 mm (4.3 inches)
Weight (with cables) 0.32 kg (0.71 LB)
Temperature range:
Operating 0° to 40°C (32° to 104°F)
Storage - 20° to 65°C (-4° to 149°F)