I was excited about filling my own KR808s and using them on my V2 batteries. Bought some juice yesterday, condom filled some V2 blanks, bam! They were fantastic. Then I filled some more today with a different liquid, my ECs that came in the mail. Both batteries, fully charged (1 manual and 1 auto) blinked three times and shut off. I freaked out thinking I had shorted out my batts. Remained calm. Put a V2 cart on them and they were fine. I am thinking I broke the carts or something. I popped the caps off and re-centered the little tubey thing. Now I have one working again, but one is still dead. A statement to myself and a question for those more knowledgeable: 1: Do not proclaim to someone that you are thrilled to have "mastered" the condom filling method and "it's so easy" until you have consistently filled those suckers for a while. 2: Did I over-fill it? The batteries are fine, and I only filled to the mid of the condom cap as instructed just about everywhere online. I wiped off the battery portion after I blew through it. I'm not sure what I did wrong. Could it be that this juice is 50/50 and the last was likely 70/30? I guess that's two questions 