It will take only a pulse for the current to flow between your e-cig and the batteries Master Pro Vape. The batteries of the French brand MPV are specially designed for the vape, offer the best to your e-cig. Enjoy a nice autonomy with the 3000 mAh of this 18650 MPV battery. Once in the bowels of your box, this battery will deliver a maximum discharge current in pulse of 40A (continuous discharge current of 20A). Its INR chemistry of a great stability allows you to vape safely as well in electronics, as in mecha.