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
Garmin 0101102503 Li-Ion Replacement Battery, Mfg# 010-11025-03, Rechargable Li-Ion Battery Pack For The Gpsmap 620 And 640. | Autoplicity
2pcs iConstel assembly for GARMIN 011 01834 00 7.2V 2200mah 16.28wh Battery GPSMAP 620 640 Li Ion rechargeable Battery pack|Rechargeable Batteries| - AliExpress
Garmin® 010-11025-03 - 12V Battery for GPSMAP 620/640 - BOATiD.com