Lenovo ThinkPad R50 English - Service and troubleshooting guide for ThinkPad R - Page 15
Specifications, inch model, Environment, Heat output, Power source ac adapter, Battery pack
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Specifications Specifications Size 14-inch model v Width: 314 mm (12.4 in.) v Depth: 260 mm (10.2 in.) v Height: front 34 mm (1.35 in.), rear 37 mm (1.46 in.) 15-inch model v Width: 332 mm (13.1 in.) v Depth: 269 mm (10.6 in.) v Height: front 37 mm (1.46 in.), rear 40 mm (1.58 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 95% - Operating with a diskette in the drive: 8% to 80% Heat output v 72 W (246 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 Lithium-ion (Li-Ion) battery pack - Nominal voltage: 10.8 V dc - Capacity: 4.4 AH Chapter 1. Overview of your new ThinkPad computer 5