Synergy Digital GPS Battery, Works with Garmin GPSMAP 620 GPS, (Li-ion, 7.2V, 2200mAh) Ultra High Capacity, Compatible with Garmin 010-11025-03, 011-01834-00 Battery - Walmart.com
Full LCD Screen Display with Touch Screen for Garmin GPSMAP 620 640 GPS Test one by one free shipping|lcd screen display|lcd screenlcd display screen - AliExpress
Li-Ion-battery - 2200mAh (7.2V) - for GPS, navigation system, sat, nav Garmin GPSMap 620 - Electropapa
RAM Mount Garmin GPSMAP 620 640 Screw Down Mount
How to use the map screen of the Garmin GPSMap 620 and 640 with GPS City - YouTube