Well Everyone, been vaping for around 6 months and learned something new today. Recently got a cheap $11.00 pass though for a 510 cart and noticed it was way out preforming my Silver Bullet running off of a 3.7 battery, after realizing that I had to start stacking 2 RCR 123 Batts. in the silver bullet to move up to 6 volts. Now it's comparable to a device that cost 6 times less. Still love my Silver Bullet, but lesson learned, a cheap ... box mod would of given me as much joy.