Dell Precision 3520 Owner's Manual page 79

Feature Specification
Battery 42 Whr
specifications:
Depth 181 mm (7.126 inches)
Height 7.05 mm (0.28 inch)
Width 95.9 mm (3.78 inches)
Weight 210 g (0.46 lb)
Voltage 11.4 V DC
Battery 51 Whr
specifications :
Depth 181 mm (7.126 inches)
Height 7.05 mm (0.28 inch)
Width 95.9 mm (3.78 inches)
Weight 250 g (0.55 lb)
Voltage 11.4 V DC
Battery 68 WHr
specifications :
Depth 233.00 mm (9.17 inches)
Height 7.5 mm (0.28 inch)
Width 95.90 mm (3.78 inches)
Weight 340 g (0.74 lb)
Voltage 7.6 V DC
92Whr :
Depth 332.00 mm (13.07 inches)
Height 7.7 mm (0.303 inches)
Width 96.0 mm (3.78 inches)
Weight 450.00 g (0.99 lb)
Battery 68 WHr/4 cell Long Cycle Life Battery
specifications :
Depth 233.00 mm (9.17 inches)
Height 7.5 mm (0.28 inch)
Width 95.90 mm (3.78 inches)
Weight 340 g (0.74 lb)
Voltage 7.6 V DC
Typical Amp-hour 8.947Ahr
capacity
Temperature ● Charge: 0°C to 50°C (32°F to 158°F)
range
● Discharge: 0°C to 70°C (32°F to 122°F)
Operating
● Operating: 0°C to 35°C (32°F to 95°F)
Non-operating - 20°C to 65°C (- 4°F to 149°F)
Coin cell battery 3 V CR2032 lithium coin cell
Technical specifications 79