Dell Inspiron 7HR9P Setup Manual page 84

Specifications
Battery
Types and dimensions
9-cell "smart" lithium ion
Height 22.80 mm (0.90 inches)
Width 214 mm (8.43 inches)
Depth 78.76 mm (3.10 inches)
Weight 0.52 kg (1.15 lb)
6-cell "smart" lithium ion
Height 22.80 mm (0.90 inches)
Width 214 mm (8.43 inches)
Depth 57.64 mm (2.27 inches)
Weight 0.34 kg (0.75 lb)
Voltage 11.1 VDC (6/9 cell)
Charge time 4 hours (when the
(approximate): computer is turned off)
82
Battery
Operating time Battery operating time
varies depending on
operating conditions.
Coin-cell battery CR-2032
AC Adapter
NOTE: Use only AC adapters specified
for use with your computer. See the
safety information that shipped with your
computer.
Input voltage 100–240 VAC
Input current 1.7 A
(maximum)
Input frequency 50–60 Hz
Output power 65 W or 90 W