Synergy Digital GPS Battery, Works with Garmin Edge Touring Plus GPS, (Li-Ion, 3.7V, 1000 mAh) Ultra High Capacity, Compatible with Garmin 361-00035-00 Battery - Walmart.com
Best battery options for Garmin GPS unit – GPS Training
Lithium Ion Battery Pack | Garmin
Battery 2.4V 2Ah NiMh for GPS Garmin Oregon 600, 650