I think that the incident is not due to battery malfunction, but to an unfortunate, sometimes inevitable shot circuit. this pair is new and it's been a while that I'm using it. They are generic CR2 3V 800Mah (blue ones) that I tested , and seemed perfectly normal, and never posed a problem.
I'm very much used to CR2 batteries and the Grant is my daily device. I follow safety measures very strictly and always check up the batteries with my multimeter and never mix between pairs. I even use the pairs themselves in a strict order, each in its turn.
I always check if the batteries are not leaking, are dry, are clean...I always not only clean up my connections inside and out, but even shine them.
I am even maniac to a point where I never keep batteries out of their protective case, even at home, and even there, I always put in the charged batteries with the positive side direction opposite to the opening of the box and the discharged ones the other way around, so I don't have to wonder which box contains the used batteries and which one contains the fresh charged ones.
When I feel the unit I vape with, heating, I'm trained to instantly, in less than a second, open a cap and pull it away, and put the unit aside with the batteries released from any connection, and leaving everything to cool down. Then I would remove the batteries, and put them away, and use another pair.
I think that with the use of unprotected batteries, no matter the safety measures one can always take, the risk will always exist.
And this is where the last line of defense comes in place: The Mod's safety feature.
And the GG performed its task perfectly!
The big blast and the rocket effect is not something that would ever happen when vaping IMHO. It only happened because a fresh new well functioning battery was put into a fire for almost a minute. Not because of malfunction or quick self-discharge or short-circuit.
So the big blast and the rocket effect, are not to be considered effective risks IMHO, but only show the extent of the GG's endurance and reliability in the most extreme conditions.
But where the GG proved itself, is at the first blast. This first blast was of the battery that malfunctioned and caused it all.This is the blast that would have caused me injuries if I was using another Mod. This blast occurred with the battery that was the closest to me, the one on the atomizer's end, and it happened while the atomizer was in my mouth and I was vaping.
Although this first explosion was quite understandably weaker than the second one, yet it was still impressive, and I realize that now.
Yet I didn't feel any pressure in my mouth, due to the fact that the GG diverted the blast downwards. This action was only successful, because the GG had 3 holes in the bottom cap. Not 1 hole, not 2 holes....3 big enough holes.
And also because the GG's front cap, at the atomizer's end, is strong and sturdy. It didn't move a fraction of millimeter, even with the second blast. Even the adapter and the atomizer I was using, are still normally functional and didn't suffer any damage, although with the 2 explosions, they took a very very strong hit!
And keep in mind how much the Grant is quite tiny, yet was not shaken by these 2 significantly big explosions.
So this is where the GG comes out of the masses of Mods. Another unit would not have had the power to sustain the first blast, and would have caused injuries. The 3 holes at the bottom, and the strong and sturdy construction, were truly the providence here.
By the way, I don't think that eventual holes on the side are safer than holes on the bottom. They can cause serious burns to the hands holding the device and maybe project fumes closer to the eyes, and with a huge pressure and blast, they would not necessarily prevent the rocket effect, but would only make the device turn on itself. It would become a torpedo then
a torpedo!!!!!!!
