Battery Type: Li-ion Polymer battery Capacity: 1050mAh Nominal Voltage: 3.7V Pack Dimension: 52.00 x 34.50 x 5.20mm Weight: 15g Working Temperature: Less than 60 Degree C(140 Degree F) Compatible Models: Garmin Nuvi 30, 40, 40LM, 50, 50LM, Nuvi 52, 52LM, Nuvi 65, 65LM, Nuvi 1390, 1390T, 1390LMT Cautions: 1. DO NOT ATTEMPT OPEN, DISASSEMBLE THE BATTERY. 2. DO NOT CRUSH, PUNCTURE OR DISPOSE OF IN FIRE OR WATER. 3. DO NOT EXPOSE TO ABOVE 60 Degree C(140 Degree F).