Adventurer ProEN-243.6.2 Battery OperationRefer to Section 5.2 to determine if your Adventurer Pro model operates on battery power when ACpower is not supplied. Models with the battery operation feature will display the battery changeindicator, as shown below. If batteries are installed and AC power is not present, the balanceoperation is affected as follows:• The LCD backlight is normally off to conserve power. The backlight turns on when thedisplay becomes unstable or when a button is pressed. The backlight turns off 5seconds after the display becomes stable or after 5 seconds with no button presses. Thebacklight is always off if the Backlight menu setting is OFF.• Auto Off is set to 5 minutes. If continuous operation is desired, change the Auto Offmenu setting to Off.• The battery charge level is annunciated by means of a three segment battery symbol onthe display as follows:Full charge2/3 charge1/3 chargeReplace batteries (Flashing)