IBM ThinkPad X40 Series Service And Troubleshooting Manual page 14

Reduce the risk of fire and electric shock by always following basic safety
precautions, including the following:
v Do not use your computer in or near water.
v During electrical storms:
– Do not use your computer with the telephone cable connection.
– Do not connect the cable to or disconnect it from the telephone outlet on the
The battery pack should be stored at room temperature, charged to approx. 30 to 50
% of capacity. We recommend that battery pack be charged about once per year to
prevent overdischarge.
If the rechargeable battery pack is incorrectly replaced, there is danger of an
explosion. The battery pack contains a small amount of harmful substances. To
avoid possible injury:
v Replace only with a battery of the type recommended by IBM.
v Keep the battery pack away from fire.
v Do not expose it to water or rain.
v Do not attempt to disassemble it.
v Do not short-circuit it.
v Keep it away from children.
Do not put the battery pack in trash that is disposed of in landfills. When
disposing of the battery, comply with local ordinances or regulations and your
company's safety standards.
xii
®
ThinkPad X40 Series Service and Troubleshooting Guide
DANGER
wall.
DANGER: Storing the rechargeable battery pack
DANGER