The 650mah 3 Temp Button Battery is 510 threaded rechargeable vape pen battery with a 3 temperature variable voltage setting and a LED color changing button. The battery's button turns different colors for different voltages; green is for 2.6V, red for 3.3V, and Blue for 4.0V. The LED button turns a gradient of colors as the battery preheats and is easy to use with CE3 and A3 cartridges or other cartridges purchased from dispensaries.