I'm pretty sure you were maxing that battery out considering if you do the math of Amps=Voltage/Resistance (4.2/.07) you're hitting 60 amps! Almost DOUBLE what even the manufacturer rates them at. The fact that you have to take that long of a drag to produce a cloud like that suggests you're not getting the 252(!) watts that the coils SHOULD be pulling. Unless you have the lungs of a free diver that vapor should have been dense and HOT. Pull the RDA and throw it on a 26650 or dual 18650 unregulated and I guarantee it will hit FAR harder. The fact that you've constantly done this without venting only shows that MXJO makes or rewraps quality cells, not that it's some super sub-rated battery. Asking a battery to produce twice it's rating is reckless at best, simply dangerous at worst.
Kudos to MXJO producing/choosing a quality cell which I'm still skeptic that it really IS an HE2 which is still a tried and true quality cell. People saying it is an HE2 is not a bad thing they just know the LGs are found for a few bucks less. If that yellow label makes you feel better then go ahead and buy it. It's not like they're twice the price. What's a couple bucks?
I just get anxious who will only read that first message and think this is OK as obviously it's not. Vaping doesn't need any stories to spread like wildfire of someone having a battery venting in their face because you got away with it. There's enough urban legends that idiots tout as fact to verify the evils of vaping. We don't need authentic ones. At the least I'm thankful you later stated NOT to do this.
LG has tested these cells and literature is easily found. They were pushed FAR beyond their ratings and understandably pulled back to "safe" levels when rated. No company in their right mind is going to sell a battery that vents at 40 amps as a 35 amp cell. Just because I can get my 20 amp AWs to chuck clouds on a quad coil @ 0.12 ohms (35amps) without heating up doesn't make it even remotely safe. Although the fact that that same coil hums along on an HE2 but hits like a truck on a 50 amp rated 26650 tells me there is a limit to just how much power a battery will deliver, be it safe, shorting, or venting.
Vape safe and vape on!

