Dell 640M Laptop User Manual


 
Specifications 161
Battery
Type 9-cell "smart" lithium ion
6-cell "smart" lithium ion
Dimensions:
Depth
60.1 mm (2.37 inches) (9 cell)
49 mm (1.93 inches) (6 cell)
Height
24 mm (0.94 inch)
Width
206.8 mm (8.14 inches)
Weight 0.48 kg (1.06 lb) (9 cell)
0.32 kg (0.7 lb) (6 cell)
Voltage 11.1 VDC
Charge time (approximate)
:
Computer off
2 hours (6-cell)
3 hours (9-cell)
Operating time Battery operating time varies depending on
operating conditions and can be significantly
reduced under certain power-intensive
conditions. See "Power Problems" on
page 96.
See "Using a Battery" on page 37 for more
information on battery life.
Life span (approximate) 500 discharge/charge cycles
Temperature range:
Operating
to 35°C (32° to 95°F)
Storage
–40° to 65°C (–40° to 149°F)
Coin-cell battery CR-2032
AC Adapter
Input voltage 90–264 VAC
Input current (maximum) 1.5 A
Input frequency 47–63 Hz
Output current 4.34 A (maximum at 4-second pulse);
3.34 A (continuous)
Output power 65 W
Rated output voltage 19.5 +/–1.0 VDC