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Backup Battery for the GI-275
The Basic GI-275 variant does not come with a backup battery. There is an optional 60-minute backup battery that can be purchased from your local Garmin Aviation Dealer. For help with finding a local Garmin Aviation Dealer, please see How can I Find a Garmin Aviation Dealer?
The GI-275 with ADAHRS and the GI-275 with ADAHRS +AP come with a 60-minute backup battery.
Click here for more information on the GI 275.