I went to my local shop and purchased the ego ce5 for around £7 when I plug it in to charge the light stays green and won't charge, also when I screw it on to the tank it came with and press the button the blue light flashes 10 times, although if I take the tank off and hold the button in it lights blue as normal, if I connect it to my aspire k1 tank it lights blue as normal although I get no smoke can anyone help