Battery2go - 1 year warranty - 3.7V Battery For Garmin Nuvi 310, Nuvi 350, Nuvi 310D, Nuvi 300T, Nuvi 300, Nuvi 310T Capacity: 1250mAh Type: Li-Polymer Volts: 3.7V Size : 37.00 x 60.00 x 5.20mm Certificated with ISO9001, RoHS & CE;