Dell Inspiron 640M Owner's Manual page 161

Battery
Type
Dimensions:
Depth
Height
Width
Weight
Voltage
Charge time (approximate)
Computer off
Operating time
Life span (approximate)
Temperature range:
Operating
Storage
Coin-cell battery
AC Adapter
Input voltage
Input current (maximum)
Input frequency
Output current
Output power
Rated output voltage
9-cell "smart" lithium ion
6-cell "smart" lithium ion
60.1 mm (2.37 inches) (9 cell)
49 mm (1.93 inches) (6 cell)
24 mm (0.94 inch)
206.8 mm (8.14 inches)
0.48 kg (1.06 lb) (9 cell)
0.32 kg (0.7 lb) (6 cell)
11.1 VDC
:
2 hours (6-cell)
3 hours (9-cell)
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.
500 discharge/charge cycles
0° to 35°C (32° to 95°F)
–40° to 65°C (–40° to 149°F)
CR-2032
90–264 VAC
1.5 A
47–63 Hz
4.34 A (maximum at 4-second pulse);
3.34 A (continuous)
65 W
19.5 +/–1.0 VDC
161
Specifications