Been wondering this for a while, have been building my own coils lately on my mech, vaping smoothly, but then a question arose. I have an Evod VV battery that I use every so often now, it obviously has a 510 connection, as does the Nimbus. So why can't you use the two? Or can you? I haven't tried, because I wanted answers just in case it was dangerous. Same goes for any other non-mech. Is it the amps the battery can hold? The wattage? Or what?