Those explosions are actually pretty rare but much hyped. I would just buy from reputable dealers who sell mainstream brands. And be very wary of prices that are lower than average as that would indicate a knockoff . I have done some pretty dumb stuff with lithium ion batteries and only have managed to blow one up by removing the protective circuitry and hooking it straight to a 5 volt power supply for too long. Since it was uncontained it just popped and smelled bad. I also would make sure to use name brand chargers. As mentioned somewhere else in this thread there have been explosions in other devices with lithium ion batteries including cell phones, laptops and electric cars.