I'm new to e-cigs. Just want to thank Bloog for the change from analog to e-cigs! Amazing compared to the V4L. I have recently purchased a V4L passthrough and a mini maxx fusion. I must say the mini maxx fusion outperforms the V4L passthrough on performance of vapor production and cartomizers. Bloog is amazing! BTW...My mini batts are lasting a whole day for me as a new vapor user. I can't yet compare to a V4L auto battery as I have not purchased them yet, but I now feel perfectly content with Bloog. I just hope Bloog can keep up with the demand. Thanks ECF members for the support and advice!