A Joule is a Watt Second (NOT Watts per second). A Joule is equal to one
watt of power delivered over 1 second of time. That’s the correct definition.
However, this means you divide your wattage by the total number of seconds it is applied.
10 Joules applied for 1 second is 10 Watts.
10 Joules applied for 10 seconds is only 1 Watt.
So if you set your mod for 40 Joules and took a 5 second draw you would be vaping at 8 watts…Unquote
Here’s a link to Rapidtables.com which covers this and the website also has much more info on pretty much any electrical conversion/explaination, etc…