Sharp Actius PC-UM20 Operation Manual page 12

Discharging
Do not use the battery pack for any purpose other than powering the computer.
Storage
Store the battery pack in a cool and dry place. Never allow the temperature to
exceed 60 C (140 F) during storage.
Recharge the battery pack after storage, before use.
Modem Precautions
Never install telephone wiring during a lightning storm.
Never install telephone jacks in wet locations unless the jack is specifically
designed for wet locations.
Never touch uninsulated telephone wires or terminals unless the telephone line
has been disconnected at the network interface.
Use caution when installing or modifying telephone lines.
Avoid using the telephone during a lightning storm. There may be a remote risk
of electric shock from lightning.
Do not use the telephone to report a gas leak while in the vicinity of the leak.
xi