Battery Type: Liion Polymer battery Capacity: 1800mAh Nominal Voltage: 3.7V Pack Dimension: 52.00 x 34.50 x 9.00 mm Weight: 25g Working Temperature: Less than 60?(140?) Compatible Models: Kenwood SD2WL8019, PKT03K, PKT23, PKT23K, ProTalk LT Compatible Battery Models: KNB71L 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?).