So I just bought an mflb yesterday (not my first vape, not even my first mflb) and I went to charge the batteries but when I plugged them in one of the batteries was just flashing red/green and the other was charging normally. I switched them around and same thing so I know its that one battery. So I'm just wondering if anybody has had experience with it? How should I go about getting it replaced? I am thinking of taking it back to my head shop to get the one replaced but I think I lost the receipt so I don't know how well that would work? Would they still replace it if I can show them everything is unused? Or should I contact mflb because I know they have great customer service. Thanks! Happy tokin'