Epson ActionNote 650 User Manual page 51

Note
You can save power when you are not using the serial port
by setting the COM Port option to Disable in the SCU.
Just be sure to run the SCU to enable the port again before
you connect a device to it.
The ActionNote includes special power management features
that protect your data even when there is very little power left
in the battery. If the Battery Low option in the SCU is
enabled (default setting), the computer automatically enters
suspend mode when the battery power reaches a critically low
level.
If you selected Suspend to Memory as your suspend mode, the
contents of memory are protected for several hours. If you
selected Suspend to Disk (the default setting), the memory
contents are saved in a data file on your hard disk drive, so
they are always available. (See Chapter 1 for instructions on
selecting your suspend mode and see "Using the Power
Management Features" on page 3-10 for more information
about these modes.)
Note
Do not remove the computer's battery and leave it without a
power source for more than 10 days. If this happens, the
real-time clock battery runs out of power and cannot retain
your system configuration information. You must run the
SCU and re-enter any changes you made to the default
settings.
The following sections describe how to monitor the battery life,
how to recharge the battery, and how to replace it.
Powering the Computer 3-3