Dell Inspiron 1521 Owner's Manual page 182

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
182
Specifications
9-cell "smart" lithium ion
6-cell "smart" lithium ion
67.6 mm (2.66 in) (9 cell)
47.5 mm (1.87 in) (6 cell)
20.4 mm (0.8 in)
209.9 mm (8.26 in)
0.48 kg (1.06 lb) (9 cell)
0.33 kg (0.7 lb) (6 cell)
11.1 VDC
:
4 hours
Battery operating time varies depending on
operating conditions and can be significantly
reduced under certain power-intensive
conditions (see "Power Problems" on
page 120).
See "Using a Battery" on page 47 for more
information on battery life.
300 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