How can I make my batteries last longer?

First, use the AC adapter whenever possible. Applications which continuously update the screen (i.e. Tigerfox), or use the serial port (i.e. FILER or COMM), use more power than programs which spend most of the time waiting for keystrokes. Use of the AC adapter is especially important with these high power usage programs.

Second, always close the FILER and COMM applications when they are not in use. These two applications turn the power on to the 95LX's serial port.

Third, when you are finished using the HP 95LX, turn it off. The five minute wait before the HP 95LX automatically turns off will add up.

Fourth, if you are running in DOS mode, the serial port is powered on. You can execute the SERCTL /O command in DOS to force the serial port off. See page B-17 in the HP 95LX User's Guide for details on this option. (The System Manager will turn the power to the serial port back on when it is required for the built-in applications).