I agree with your statement, that it is usually the atty getting scorcing, traveling down making my batteries get slightly warm. And I am talking skin warmth, not actual heat.. My use of 20R must have come after the change. I've only got a copy of the latest spec sheet. Knowing Samsung, it's the exact same cell, just they were prepared to sacrifice some of their massive conservatism without too much worry.
I'm definitely not well versed in the chemistry behind cells, but from what I can gather, LGs hybrid tech, while having aspects to of an ICR chemistry cell is so far removed from one it's hard to see just by looking at the ingredients list. Kind of like adding flour to butter and sugar and getting a cake, but if you add flour to yeast, water and salt you get bread. They give the same kind of list of mistreatment and their results as those from IMR tech, such as "Dropped from 1 meter onto an oak board : No explosion, no fire. Heated to 140c in an oven : No explosion, no fire" etc. Of any warmth I've felt from a HB6 or HD2, I'd guess 95% was from the atomiser heating the cell rather than from the cell itself. I regularly Vape at 0.15 with them and they're cool. Like I say though, they don't last long.
You'd have to pry my hybrid topcap out of my cold dead hand. If you did, cause of death most certainly wouldn't be a venting battery. I check things too often to get caught out. Sure something could catastrophically fail, but I could get knocked down by a bus crossing the street tomorrow. If being as safe as. I can be.
With a standard topcap, anyone could put a battery in a mech backwards and give themselves just as nasty a Crack in the hand.
My golden rules:
Check your stuff every time you change batteries
If the screw on an atty needs adjusting out to be suitable.... It's NOT suitable, unless it's reverse threaded and super high quality.
If you have doubts it's not suitable for a hybrid topcap, it's likely not suitable, trust your instinct.
For me a hybrid topcap on my Nemesis isn't about voltage drop. It's about not scaring the cells with black arc marks and totally eliminating the warm ( not hot) button I get below 0.2ohms.
If people are building at 0.15, like I am they need to be savvy enough to use a hybrid safely.
I know vaping is in the spotlight and I get it. However, I'm not running scared from the scrutiny. If stupid people do stupid stuff, they'll just end up finding other stupid things to do, banning hybrids won't do much. By stupid people I mean those that chance it or the people who sell hybrid mods to People in a "my first mech mod" kit. Smoking causes thousands of house fires a year, but there's not much fuss made about it, not as much as you think there would be. Don't see why the odd stupid act should see hybrids outlawed, they're not banning cigarettes because people burn their families to death with them.
People make shit decisions, that's always been the case. No need to deprive everyone of something just to account for the few that are hard of thinking.
Any incident of shorting mechs is bad news. I don't want to see anyone hurt. In the brand scheme of things though hybrid topcap mishaps are small fry. I'm way more worried about shitty rewrapped cells than hybrids.
Can someone explain what there was before hybrid top caps, and why have they made a more dangerous system if something already existed?