My vv 
device is broken at the moment 

   I should have another one here tomorrow (please please please)  so for now I've got to use mine on a 3.7 box.  Experimenting with the 2.0 boges (in a 
tank)but they're just not that great at 3.7.  When I had my vv 
device, I loved using the resurrectors at 4 volts.