Garmin Alkaline Battery Pack. When the batteries run out on your GPS unit more often than not you're out of luck especially when you're using a handheld GPS device. Cars have cigarette lighters to power their GPS but what if you're using your Garmin GPS far away from any plugs cigarette lighters or convenience stores? That's when it's handy to have an extra Garmin Alkaline Battery Pack along with you. Simply load this Garmin GPS accessory with four AA batteries and it will serve as a reliable backup battery unit for your Garmin Rino GPS. This particular GPS accessory is compatible with the Rino 610 650 and 655t. Come prepared and never run out of juice unexpectedly with the Garmin Backup Battery Pack. Specifications for Garmin Backup Alkaline Battery Pack: Batteries: 4x AA Features of Garmin Alkaline Battery Pack for Rino GPS: Serves as backup battery for Garmin GPS units Powered by four AA batteries Compatible with Rino 610 Rino 650 and Rino 655t Package Contents: Garmin Rino Alkaline Battery Pack 010-11600-00