I have a battery from a Riva kit I got last week whose LED stopped working. I don't necessarily care if it lights up when I push the button, but since it was working and now isn't, I want to make sure this isn't a sign of things to come. I really, really like the kit a lot - even ordered a second, which is taking a detour across the country right now, I suspect (was supposed to be delivered on September 2nd, but is still in transit). I'm sure I will hear back from them after the holiday weekend. I hear only good things about this company, and my first order shipped at the speed of sound.
Between the Rivas and the 510s with drip tips, I have been able to
vape happily with less frustration than before. Liberty Flights has amazing prices on most of the stuff I use too.