Gomadic Intelligent Compact Car / Auto DC Charger suitable for the Garmin Nuvi 40 40LM - 2A / 10W power at half the size. Uses Gomadic TipExchange Tec - Walmart.com
Cameron Sino 750mah Battery For Garmin Nuvi 40, 40lm, Nuvi 52, 52lm, 56lmt,66lm,68lmt,2689lmt,2689lmt 6-inch, Note The Connector - Digital Batteries - AliExpress