Lenovo X131E Operating environment, Heat output, Power source ac power adapter, Battery pack

• Height: 32.3 mm (1.27 inches)

Heat output

• 65 W (222 Btu/hr) maximum

Power source (ac power adapter)

•Sine-wave input at 50 to 60 Hz

•Input rating of the ac power adapter: 100 to 240 V ac, 50 to 60 Hz

Battery pack

• Lithium-ion (Li-Ion) battery pack

Battery life

•For the percentage of remaining battery power, check the battery status icon in the Windows notification area.

Operating environment

This section provides information about your computer operating environment.

Environment:

•Maximum altitude without pressurization: 3048 m (10 000 ft)

•Temperature

–At altitudes up to 2438 m (8000 ft)

–Operating: 5.0°C to 35.0°C (41°F to 95°F)

–Storage: 5.0°C to 43.0°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).

•Relative humidity:

–Operating: 8% to 80%

–Storage: 5% to 95%

If possible, place your computer in a well-ventilated and dry area without direct exposure to sunshine.

Keep electrical appliances such as an electric fan, radio, air conditioner, and microwave oven away from your computer because the strong magnetic fields generated by these appliances can damage the monitor and data on the hard disk drive.

Do not place any beverages on top of or beside the computer or other attached devices. If liquid is spilled on or in the computer or an attached device, a short circuit or other damage might occur.

Do not eat or smoke over your keyboard. Particles that fall into your keyboard can cause damage.

12User Guide