Dell X51 - Manual (Page 133)

Appendix 133
Power Supply
Battery type:
Main 1100-mAh lithium-ion removable,
rechargeable battery (standard)
2200-mAh lithium-ion removable,
rechargeable battery (optional)
Backup Capacitor to preserve RTC data
AC adapter:
Supply voltage 100–240 VAC
Frequency 50–60 Hz
Current consumption 0.4 A
Output voltage 5.4 VDC
Output current 2.41 A
Environmental
Temperature range:
operating 0° to 40°C (32° to 104°F)
storage –20° to 60°C (–4° to 140°F)
Thermal gradient:
operating 15°C (59°F) per hour maximum
storage 20°C (68°F) per hour maximum
Relative humidity (maximum):
operating 10% to 90% non-condensing
storage 5% to 95% non-condensing