3.7V / 20A = 0.185 Ohm. Have you ever heard of a 0.185 Ohm vaporizer coil? Have you ever seen one? Have you actually used one before? Yes, anything can be made and making a short, power hungry coil is child play, you only need a short metal wire of the correct length. The question is what usefulness can a 0.185 Ohm coil provide? Other than a silly bragging right? But that's exactly what the Sony VTC5 is for. It's the only choice for a 0.185 Ohm vaporizer coil.
The rest of us - normal people - use normal vaporizer coils, ubiquitous and commercially available. Their resistance values range from 1-Ohm for the powerful to 2-Ohm for the common to 3-Ohm for the weaker ones. How many A does the powerful 1-Ohm coil need? (3.7V / 1 Ohm) = 3.7A. That's right, only 3.7A for a 1-Ohm coil.
The Sanyo UR18650FJ has a true maximum discharge rate of 2C or 4.4A, more than aquedate to support the powerful 1 Ohm vaporizer. In fact, the UR18650FJ works with all sub-Ohm vaporizers with a resistance of 0.84 Ohm or higher (3.7V / 4.4A)
Using the Sony VTC5 with a typical commercially available vaporizer (1 to 3 ohm) is the same as driving an expensive 300mph capable car on roads with a 60mph limit. The Sanyo UR18650FJ does the exact same job for half the cost.
==================== End of explanation for the value-conscious consumer ========================
Sanyo UR18650FJ 2200mAh (Sanyo and Panasonic merged in 1998 and is one company today)
Affordable, versatile and reliable 18650 rechargeable lithium batteries from Panasonic, the largest and most reputable 18650 manufacturer in the world. It has been an integral part of modern, expensive and sophisticated products: HP, Dell, Toshiba laptop computers. It is the exclusive 18650 battery supplier for Tesla, the unique, famous, successful and profitable all electric car USA manufacturer. It is the preferred battery for the bright, innovative CREE LED flashlights and headlights. It is widely used in 18650 mechanical mods, vapes and vaporizers. It is found in Honda, Yahama and Panasonic electric bicycles and scooters. Golf cart manufacturers are offering Panasonic lithium battery as an option in place of the antiquated SLA battery. Radio controlled (RC) toys manufacturers are converting to the lithium 18650 format to replace of the old, tired NiMh-NiCad battery. And more... The list goes on.
