NewPower99 Battery Replacement Kit for Garmin Nuvi 660 with Installation Video, Tools, and Extended Life Battery. # 361-00019-02 Guaranteed for One Full Year High Capacity 1150 mAh 3.7V Battery Revives Your Garmin Nuvi 660 Comes with Tools and Video Instructions Kit Includes Everything You Need to Revive Your Garmin Nuvi 660 GPS