I got a Sensis at April and it was working perfectly till mid August, past the guarantee period, then it just sort of blacked out and stopped charging. I didn't throw it out, figured maybe some juice got in it and needed time to dry. I kept trying to turn it on again and then in mid-October it happened, it worked for a while and it just stopped charging again, till today. Seriously, don't know what's going on or what the problem could be, and if it's even worth it to buy more coils or just finish the ones I already have and then just recycle it. Truth is it's the best kit I ever got, in terms of flavour and RDL vaping and the Sensis EZ is not yet available in my country.