Dell Alienware M14x (Early 2011) - Manual (Page 111)

CHAPTER 7: SPECIFICATIONS
109
Battery
Weight
0.43 kg (0.94 lb)
Voltage 14.8 V
Operating time battery operating time varies depending on operating
conditions and can be significantly reduced under
certain power‑intensive conditions.
Life span (approximate) 300 discharge/charge cycles
Temperature range
Operating 0° to 50°C (32° to 122°F)
Storage –20° to 60°C (–4° to 140°F)
Coin‑cell battery CR-2032