Battery Type: Li-ion Polymer battery Capacity: 1200mAh Nominal Voltage: 3.7V Pack Dimension: 5.5 x 37.5 x 61.0mm Weight: 15g Working Temperature: Less than 60℃(140℉) Compatible Models: Palm Tungsten TX 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℃(140℉).