I was having problems with gurgling and loss of vapour. Turned out I was screwing the battery in to hard and pushing the centre pin in. Was thinking of trying the aspire cf G power battery which has a sprung pin so hopefully no more connection problems. The bvc is 1.8 that I'm using and the g power is 4.2. Much more than the standard inno battery I'm using now. Will they work ok together? 1.8 coil and 4.2 battery ? Has anyone tried these new batteries ?