Dell Inspiron 15 (7537, Mid 2013) - Manual (Page 5)

Keyboard
Type Backlit keyboard with numeric keypad
Camera
Resolution:
Still image 0.92 megapixels
Video (maximum) 1280 x 720 (HD) at 30 fps
Diagonal viewing angle 74 degrees
Touchpad
Resolution:
Horizontal 1211 dpi
Vertical 1267 dpi
Dimensions:
Width 4.13 in (105 mm)
Height 3.15 in (80 mm)
Battery
Type 4‑cell battery
Dimensions:
Height 0.30 in (7.62 mm)
Width 4.01 in (101.90 mm)
Depth 10 in (254 mm)
Weight 0.79 lb (0.36 kg)
Voltage 14.8 VDC
Charging time 4 hours when the computer is powered off.
Operating time Varies depending on operating conditions and
can significantly reduce under certain power‑
intensive conditions.
Life span (approximate) 300 discharge/charge cycles
Temperature range:
Operating 0 °C to 35 °C (32 °F to 95 °F)
Storage –40 °C to 65 °C (–40 °F to 149 °F)
Coin‑cell battery CR‑2032