New Flat Controller for Joyetech eGo T Upgrade 18650 Battery MOD $10

Designed for Joye eGo T Upgrade 18650 Battery MOD tube.

This new flat controller has 2 characteristics:first, it can match with the VIvi Nova perfectly.second,the controller has 2 modes to switch. One mode is the constant voltage output mode at 3.3v, same as eGo C battery. The other mode is variable voltage mode, which works from 3.6v to 4.15v.