Dell Latitude 10e ST2E (Early 2013) - Manual (Page 35)

Battery
Width 86.50 mm (3.40 inches)
Weight 220.00 g (0.49 lb)
Voltage 7.4 VDC
Temperature range
Operating 0 °C to 50 °C (32° F to 158 °F)
Non-Operating -20 °C to 65 °C ( –4 °F to 149 °F)
Coin-cell battery 3 V CR2025 lithium ion
AC Adapter
Type
Input voltage 100 VAC to 240 VAC
Input current (maximum) 0.87 A
Input frequency 50 Hz to 60 Hz
Output power 30 W
Output current (30 W) 1.54 A
Rated output voltage 19 Vdc/1.58 A; 19.5 Vdc/1.54 A
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)
Physical
Height 10.50 mm (0.41 inch)
Width 274 mm (10.79 inches)
Depth 176.60 mm (6.95 inches)
Weight (minimum) 699 grams (1.54 lb)
Environmental
Temperature:
Operating -25 °C to 85 °C
Storage -40 °C to 85 °C
Relative humidity (maximum):
Operating Operating 10% to 90% (noncondensing)
Storage Storage 5% to 95% (noncondensing)
Altitude (maximum):
35