Backup Battery - Garmin GI 275 Pilot's Manual

BACKUP BATTERY

Some units have a backup battery installed to enable device functionality even with a total
loss of aircraft power. Backup batteries are required for all units with ADC and AHRS sensors.
When on the ground and aircraft power is lost, an "External power lost. Shutting down in x"
countdown begins with an option to Stay On or Pwr Off. The unit must be manually shut
down after aircraft power is lost and the Stay On Button is selected. If airborne and power is
lost, an "External power lost." message is displayed.
The battery must be tested every 392 days using the instructions provided in the Installation
Manual for legal flight under IFR.
The 'Battery Status' Screen displays:
» Remaining battery charge %
» Time to full charge (if charging)
» Minimum battery backup time
» Battery status (temperature, voltage, current)
190-02246-01 Rev. A
Battery 'Menu'
Garmin GI 275 Pilot's Guide
System Overview
11