Lenovo ThinkPad T61 7659 User Manual page 71

v Height: 29.8 to 34.5 mm
Environment
v Maximum altitude without pressurization: 3048 m (10,000 ft)
v Temperature
– At altitudes up to 2438 m (8000 ft)
- Operating: 5°C to 35°C (41°F to 95°F)
- Non-operating: 5°C to 43°C (41°F to 109°F)
– At altitudes above 2438 m (8000 ft)
- 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
14.1-inch widescreen model
v Lithium-ion (Li-Ion) battery pack
– Nominal voltage: 10.8 or 14.4 V dc, depending on the model
– Capacity: 2.6 AH or 5.2 AH, depending on the model
14.1-inch screen and 15.4-inch widescreen model
v Lithium-ion (Li-Ion) battery pack
– Nominal voltage: 10.8 V dc
– Capacity: 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 tray.
Operating system
v For operating systems supporting your computer, see http://
www.lenovo.com/think/support.
Appendix C. Features and Specifications
Specifications
61