Synergy Digital GPS Battery, Works with Garmin 616-00077-00 GPS, (Li-ion, 3.7V, 1800mAh) Ultra High Capacity, Compatible with Garmin 010-12110-003, 361-00077-00, 616-00077-00 Battery Electronics
Lithium-ion Battery (zumo 590) | 010-12110-03
Replacement Battery For Garmin 361-00077-00 GPS, Navigator | eBay