Just have to give some props to Blu's customer service. Purchased a a starter pack on 9/18 and within the last couple of days, I've had an issue with one battery. It's been really hard to "draw" from the e-cig and I basically have to suck in so much that I'm out of breath by the time I get any vapor lol so I go I on their website and chat with a live person. I tell them my issue and within 5 mins, they tell me that they're sending out a replacement. No need to send anything in to them or provide proof of my purchase. Great job blu!