Dell XPS 15Z (L511Z, Mid 2011) - Manual (Page 86)

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Specifications
Battery
8‑cell “smart” lithium ion:
Height 11 mm (0.43 inches)
Width 94.13 mm (3.70 inches)
Depth 235.65 mm (9.2 inches)
Weight 0.43 kg (0.96 lb)
Voltage 14.8 V
Charge time
(approximate) 4 hours (when the
computer is turned off)
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
(maximum) 1.60 A
Input
frequency 50‑60 Hz
Output power 90 W
Output current 4.62 A (continuous)
Rated output
voltage 19.5 VDC
Operating
temperature 0° to 40°C
(32° to 104°F)
Storage
temperature –40° to 70°C
(–40° to 158°F)