Lenovo 7417P9U - Tp T400 C2d/2.4 14.1 2Gb 160Gb Dvdr Wls 6C Wvb Service Manual page 79

Maximum temperature when operating under the unpressurized
condition: 31.3°C (88°F)
Note: When you charge the battery pack, its temperature must be at least
10°C (50°F).
v Relative humidity:
– Operating: 8% to 80%
– Non-operating: 5% to 95%
Heat output
v 65 W (222 Btu/hr) maximum or 90 W (307 Btu/hr) maximum (depending
on the model)
Power source (AC adapter)
v Sine-wave input at 50 to 60 Hz
v Input rating of the AC adapter: 100-240 V AC, 50 to 60 Hz
Battery pack
v Lithium-ion (Li-Ion) battery pack
– Nominal voltage: 10.8 V DC or 14.4 V DC, depending on the model
– Capacity: 2.6 AH, 5.2 AH or 7.8 AH, depending on the model
Battery life
v For percentage of remaining battery power, see the Power Manager Gauge
on the task bar.
Appendix C. Features and Specifications
71