Smallest form factor 5V unit?

[Mr Sinister]

The Prodigy V2 is 5 volts only. Because of the resistance, if you had a 3.7 volt battery in it, you would get less than 3 volts to the atomizer, which won't heat it enough.

 

[kase]

The Prodigy V2 is 5 volts only. Because of the resistance, if you had a 3.7 volt battery in it, you would get less than 3 volts to the atomizer, which won't heat it enough.

Fans of the slb 510 atty might like that.