Not too long back(2yrs) IMR cells were a rare thing in the vape world(not even sure if rare altogether being honest). But any mods be them variable volt or mec(no VV) the cells which were sold by reputable shops were panasonic A or B. Some Sanyo were also available........Great cells and up to the job of tanks/coils of that time which were popular. In the last year sub ohm coils have took off significantly in the UK to the general user. Before it was more a specialist vaping community due to home made coils etc etc. Now various manufacturers like Kanger,Aspire and joytech to name 3 have all started making sub ohm tanks and coils. Now warnings are there,caution for advance users etc etc and correct cells to be used. It is far too easy for anyone uneducated to buy this equipment and use it with wrong cell.........very similar to flashlights. Even reputable sellers of today sold *****fire branded chargers and cells!!! this was within 2yrs. Go on ebay,as with flashlights,ecig kits come with fire cells and chargers still!!
Some shop sellers are not educated or were not through my experience,in fact i educated my local shop owner a while back on cells and uses. Dont get me wrong,many are,but how many customers have used these shops with bad advice..........scary!
I have noticed in the last 6 months these reputable sellers have seen the light! Viewing on the net anyway.... They stock better chargers like i4 or efest,better cells,efest,LG,Samsung for the correct use. I am very surprised its not more common,it wont be flashlights that cause any new laws reg cells to be brought in,it will be the use of ecig imho.
On another forum(not ecig) but car forum,its amazing how many users are ignorant to whats involved. I use the harsh word due to the fact that nothing stops users spending a few minutes researching the safe use of ecigs/cells/chargers.
I remember the fist ecig i bout,tornado with built in lithium cell...........i was told "yes safe to leave on over night charging" by the owner of the shop.........This is over 2yrs ago...........how many leave their cheap Chinese ecigs on over night topping up for morning,my guess is millions of users across the world.............
Just my opinion,and some facts from experience
Unless a full investigation(unlikely as no death) it will be hard to tell what cells,if genuine,and correct use..............Unfortunately a very serious incident or worse is around the corner...........its unavoidable!