S18 Button Battery

(Preheat + Adjustable Voltage battery)
Battery capacity: 380mAh
Diameter: 11mm
Preheating time 15s
Adjustable voltage, Bottom Led light Colour:
Red: — 3.6V
Blue: –3.1V
White : –2.7V
3 clicks to adjust output voltage
2 clicks to preheat
Colour: Stainless Steel, black ,etc.
Thread: 510 thread