Amazon.com: Gomadic Unique Portable Rechargeable Battery Pack Designed for The Garmin Zumo 220 - High Capacity Charger That fits in Your Pocket : Electronics
Garmin Lithium-ion Battery (for Nuvi)
Used Original 361-00038-01 Battery For Garmin Nuvi 500 510 550 Aera 500 510 550 560 For Zumo 660 660lm 665lm 600 650 665 220 - Mobile Phone Batteries - AliExpress