Caring For Your Thinkpad Computer - IBM ThinkPad X20 Supplementary Manual

– Non-operating: -20°C to 60°C (-4°F to 140°F)
Note: When you charge the battery pack, its temperature must be at least
Relative humidity:
– Operating: 8% to 90%
– Non-operating: 5% to 95%
Maximum altitude: 3048 m (10,000 ft.) in unpressurized conditions
– Maximum temperature at 3048 m (10,000 ft.): 31°C (88°F)
Electrical (AC Adapter)
Sine-wave input, at 50 to 60 Hz is required
The input rating of the AC Adapter: 100-240 V ac, 50/60 Hz
Lithium-ion battery pack
Nominal voltage
14.4 V dc
10.8 V dc

Caring for your ThinkPad computer

Though your computer is designed to function reliably in normal work
environments, you need to use common sense in handling it. By following
these important tips, you will get the most use and enjoyment out of your
computer.
Important tips:
Be careful about where and how you work
v Do not leave the base of your computer in contact with your lap or any
part of your body for an extended period when the computer is functioning
or when the battery is charging. Your computer dissipates some heat during
normal operation. This heat is a function of the level of system activity and
battery charge level. Extended contact with your body, even through
clothing, could cause discomfort or, eventually, a skin burn.
v Place liquids away from your computer to avoid spills, and keep your
computer away from water (to avoid the danger of electrical shock).
v Store packing materials safely out of the reach of children to prevent the
risk of suffocation from plastic bags.
v Keep your computer away from magnets, activated cellular phones,
electrical appliances, or speakers (within 13cm/5 in).
10°C (50°F).
Your ThinkPad at a glance
Capacity
1.8 AH
3.9 AH
Chapter 1. Overview of your new ThinkPad computer
5