So today i purchased a Caravela, i had previously owned an Evic. While messing with the caravela i had my evic on my desk and got an idea... i basically put the tube of the caravela onto the evic ( screwed the evic head onto the tube of the caravela and screwed the evic endcap on the bottom of the caravela) seems to work fine! is this a bad idea? should i not charge my batteries this way?