Lenovo ThinkPad X40 (Greek) Service and Troubleshooting Guide for the ThinkPad - Page 27
Environment, output, Power, source, adapter, Battery
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Specifications Specifications Size v Width: 268 mm (10.55 in.) v Depth: 211 mm (8.31 in.) v Height: 21 mm - 27 mm (0.83 in. - 1.06 in.) Environment v Maximum altitude without pressurization: 3048 m (10,000 ft) v Temperature - At altitudes up to 2438 m (8000 ft) - Operating with no diskette: 5° to 35°C (41° to 95°F) - Operating with a diskette: 10° to 35°C (50° to 95°F) - Not operating: 5° to 43°C (41° to 110°F) - At altitudes above 2438 m (8000 ft) - Maximum operating temperature, 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 with no diskette in the drive: 8% to 90% - Operating with a diskette in the drive: 8% to 80% Heat output v 56 W (191 Btu/hr) maximum 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 ThinkPad X40 Series 4 Cell Lithium-ion (Li-Ion) battery pack - Nominal voltage: 14.4 V dc - Capacity: 1.9 AH v ThinkPad X40 Series 8 Cell Li-Ion battery pack - Nominal voltage: 14.4 V dc - Capacity: 4.3 AH Chapter 1. Overview of your new ThinkPad computer 5