Dell Latitude E6520 (Early 2011) - Manual (Page 97)

Battery
4-cell 240.00 g (0.53 lb)
6-cell 345.00 g (0.76 lb)
9-cell 524.00 g (1.16 lb)
Charge time for a 4-cell and 6-cell
battery with computer off (with 90 W
adapter) approximately 1 hour to 80% capacity and 2
hours to 100% capacity.
Voltage
4-cell 14.80 VDC
6-cell and 9-cell 11.10 VDC
Temperature range:
Operating 0 °C to 35 °C (32 °F to 95 °F)
Non-Operating –40 °C to 65 °C (–40 °F to 149 °F)
Coin-cell battery 3 V CR2032 lithium coin cell
AC Adapter
Type 65 W, 90 W, and 150 W
NOTE: 65 W AC adapter is available only
for computers with integrated video card.
Input voltage 100 VAC to 240 VAC
Input current (maximum) 1.50 A/1.60 A/1.70 A/2.10 A
Input frequency 50 Hz to 60 Hz
Output power 65 W, 90 W, and 150 W
Output current 3.34 A, 4.62 A and 7.70 A (continuous)
Rated output voltage 19.5 +/– 1.0 VDC
Temperature range:
Operating 0 °C to 40 °C (32 °F to 104 °F)
Non-Operating –40 °C to 70 °C (–40 °F to 158 °F)
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