Dell XPS 13 (9343, Early 2015) - 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 4‑cell 52 WHr smart lithium ion
Dimensions:
Height 5.2 mm (0.20 in)
Width 103.5 mm (4.07 in)
Depth 257.6 mm (10.14 in)
Weight (maximum) 0.25 kg (0.55 lb)
Voltage 8.8 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 ML1220