Greetings All, The 510 arrived today. Took it out of the box put it together and took a nice long drag, great vapor worked fine. I put it down for a little bit and took several more drags and nothing, thankfully I ordered 2 of them (unfortunatley they only came with one charger) put the other one together same result. I loved the vapor when it worked. I then decided to read the instructions, you were all so helpful I didn't do this before I tried it. I am truly hoping this is because both of the batteries need to be charged for the 8 hours it states in the directions. Has anyone else had this problem? I can't wait for a good charge, have 5 extra carts in case this is the problem and my juice should be here any day now.