190-02246-11
GI 275 Part 23 AML STC Maintenance Manual
Rev. 1
Page 2-10
2.4.7 Backup Battery
The backup battery is a lithium-iron battery that is required when the GI 275 is used as a primary or
standby indicator. The battery will power the essential display sensors for a minimum of 60 minutes. The
battery is charged by the aircraft electrical system when not in use. The backup battery is optional for
GI 275 Base models and standard for GI 275 ADAHRS and AP models.
Figure 2-8 Backup Battery
2.4.8 GSB 15
The GSB 15 is an optional LRU that mounts into the instrument panel and provides two USB ports for
charging and data transfer to a GI 275 unit. The USB ports can be used in place of a USB dongle to update
the software on the GI 275 system and to charge devices while in-flight.
Figure 2-9 GSB 15 Charging Hub
