Here's the link to the original tech info everyone:
Now that is out of the way there are few things that need to be discussed. I know a lot of people on here are not ecf'ers so they may not know what happened. My lone goal is to make sure everyone not only has a satisfying vaping exprience, but also a safe one.
About a week ago someone got seriously injured using a home made non-vented, unregulated mod. Not every detail is known, but of the ones that are a key item is it was powered by two LiFePo tenergy 750 mah 123's, the very same batts in the OMG. This has caused some people to freak out. That's by no means the point of this post. The goal here is to inform. Here's what I said over on the ecf forum as soon as this was reported-
Speaking as someone who vapes heavily and spent a good week torture testing the OMG, as long as you stick to cool and wow carts your risk of an issue is minimal. If you get the 7 flashes while vaping (not the usual flashes of dead batts), put it down for 10-15 minutes. The danger comes in with use of low ohm (under 2.0ohms) cartos/atty's. My biggest question is was this mod using a setp down feature or not. At full charge without a step down of any sort you're talking with those batts a load voltage in the range of 6.2-6.5v. A 1.5ohm carto at 6.3v will pull 4.2amps. 1.875 is the limit per each batt on the tenergy LiFePo 123's. You're pulling twice that using it in a stacked set up. Good for short bursts, but longer ones, well.... Had the person in question been running that, in a non vented mod, it was a sure fire recipe for the horrible event that took place. You're pulling 3.48a or so on a fully charged OMG with a 1.5ohm dual coil. That's almost twice what it's rated for. So again, stick to wow (2.3ohm avg.) or cool carts (3.3ohm avg.), avoid deep cycling, check to make sure your batts are coming off the charger in a propper range (3.76v off load max), and be watchful if the tube starts to get hot, and you should be as safe as possible. There is no safe batt, but with safe practices you can avoid a lot of the risks...
Which lead to an even worse torture session-
After what happened with the mod and the tenergy LiFePo batts decided to put the OMG through wringer to see how safe it was. I didn't drill out the vent hole prior to doing this to negate all variables. In less than 2 days time went through a grand total of 69ml's of juice using the DCVT tank at 1.5ohms. Quite a few times the device would give me the seven flashes and stop working, which is a good thing. Went through 5 battery changes on day 1, and made it to 3 on day 2. At around it's 26th hour of constant use the switch area got hot and the 7 flashes took place. Took the batteries out of it, they were warmer than one would like but hadn't expanded or blown up. Left them out of the OMG for an hour and then put them back in. There was something wrong with the OMG though, it wasn't hitting like it used to. Had to wait until I got home to check the numbers with a fresh set off batts. Sure enough was only getting 4.57v on load with it and a DVCT. About an hour of use later there was continueing drop in performance. Checked again, now was only getting 4.12v on load. Put in fresh batts again, tested it on load, same results. Put in an unused set of freshly charged batts, still same results. After another 30 minutes of use it just wouldn't fire at all. Bad news is, killed the OMG. Good news is it didn't explode. A few things have to be pointed out-
1) No one should ever put this kind of strain on the mod. This was dangerous and stupid but felt it had to be done. Knew what to look out for, but was still taking a risk. No one should attempt to recreate the test, if you do it's at your own risk.
2) It's obvious there was cell degradation. When I started could get about 135 minutes or so of use out of the OMG with the the DVCT, by the end was only getting 90 minutes. There's no doubt that running at that high a current on these batteries is too much for them long term. A degraded cell is dangerous. Can not stress enough to not chain vape with the 1.5ohm dual coils. Personally suggest everyone who uses the OMG buy the 2.0 and 3.0 ohm replacement cartos for use with them.
Now one question that has come up a lot is "are there safer batts for the OMG?". Answer is no. LiFePo batts expand before blowing, and do not have the output of an imr. They are the safest batts as far as stacking is concerned. Imr (high drain) batts are the safest for single batt set ups, are down right dangerous though for a stacked set up.
The small batteries (like the king diamonds) are as safe as you can get. There isn't enough mah in them to cause a serious explosion, and their design prevents any major issue happening. If you've ever wondered why the manuals even have vent holes around the ash cap, diamond, or stealth cap, those are for venting. Worst I've seen or heard of is smoke coimg out the bottom. Higher mah batts are a different case. The higher the mah, the more boom potential. This is why it's important not to overcharge a fatt batt or mod battery, and to know what c rating you're dealing with. Saying a battery is 100% safe is like proclaiming you have a 100% safe and tame pet tiger. No matter how friendly it may seem, in the end it's still a tiger, and at any moment could resort to it's tiger ways.
Sorry if this goes over anyone's head, but when it comes to purchasing a mod, if you don't understand ohms, voltages, watts, amps, c ratings, etc. you shouldn't be buying a mod in the first place. Again this is not to induce fear, if I felt the OMG was unsafe to use would have never put it through what I did or use it all in the first place. This is to give everyone here the facts and knowledge of what to do and not to do to avoid any serious issues.