Dell XPS 15 (L502X, Early 2011) - Manual (Page 101)

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Specifications
Battery
Voltage 11.1 V (6‑/9‑cell)
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/11‑16 VDC
Input current
(maximum) 1.50 A/1.60 A/2.30 A/
2.50 A
AC Adapter
Input
frequency 50‑60 Hz
Output power 90 W/130 W
Output current:
90 W 4.62 A (continuous)
130 W 6.70 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)