Palm PRO Battery 500MAH: Dimensions: 57.5mm x 41.9mm x 13.7mm. Battery: Built-in 500mAh. 3 Voltage Settings (2.8V / 3.2V / 3.6V). Adjustable airflow. Standard 510 thread. 10-second preheat. 3-bar battery status LED. Drop-in magnetic connection. Inhale activated. Includes: 1 x Palm Pro Battery. 1 x User Manual. 1 x Type C Cable.