Dell Inspiron 15 (7548, Late 2014) - Manual (Page 21)

Specifications
Views
System
Information
Memory
Ports and
Connectors
Dimensions and
Weight
Computer
Environment
Storage
Touch Pad Power Adapter Camera
Communications
Battery
Video Audio
Display
Media-Card
Reader
Keyboard
Battery
Type • 3‑cell 43 WHr smart lithium
• 4‑cell 56 WHr smart lithium
3 cell 4 cell
Dimensions:
Width 251.4 mm (9.90 in) 251.4 mm (9.90 in)
Depth 112.55 mm (4.43 in) 112.55 mm (4.43 in)
Height 7.70 mm (0.30 in) 7.70 mm (0.30 in)
Weight (maximum) 0.27 kg (0.60 lb) 0.34 kg (0.75 lb)
Voltage 11.1 VDC 7.40 VDC
Charging time when the
computer is off (approximate) 4 hours
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 ML 1220