I have 2 Riva 510's from Liberty Flights. One was purchased in February, the other in maybe April. I have 4 batteries and 2 USB chargers that have the wall outlet adapter. I usually charge the batteries with the USB cable in my computer. The other day, none of my batteries would charge....I tried using the wall adapter after trying both USB cables in the computer. I tried both cables in both adapters, and still nothing. The green light was on near the USB plug, but absolutely nothing when I screwed the batteries on. How could EVERYTHING die at once? One battery wasn't even used much, I kept it in my purse with a USB charger for a dead battery on the road. And the real kicker is that Liberty Flights' website has been down since yesterday! At least I have 2 backup NuvoCigs, but after having a Riva for all this time, it's nasty. Does anyone have any idea what could be going on? Thanks!