Battery Type: Li-ion Polymer battery Capacity: 450mAh Nominal Voltage: 3.7V Pack Dimension: 6.0 x 20.5 x 42mm Weight: 10g Working Temperature: Less than 60 Degree C(140 Degree F) Compatible Models: Cardo Scala Rider Q1, Q3 bluetooth headsets 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).