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There’s an interesting development in the UK today: the Welsh Government has announced that it will ban vaping in public places and work places where smoking is banned (for reference population of Wales is 3m, UK is 64m). But that’s not the interesting development.


Read on........

oops! That's the 3200mAh Keepower which is rated only 10 Amps CDR at room temperature!!!!


The Samsung still wipes the floor with it too. They never bothered testing at 10 Amps!!!!

Samsung 25R, 2 for £10 delivered (Tracked) from puremist - confirmed genuine - FTW!!

Little alteration. Wonder how quick the kit would arrive there 

Kanger is kangertech.com szkanger.com kangeronline.com - depends where you are in the food chain. Going through the listings szkanger are the factory in china where the stuff is made.

This whole kanger thing is 

Stick to what you know, while I climb back in the box

I've had a think about this markm, and of course you're right about the dirty switch. The problem is what do we actually include when working this out. We're trying to keep it simple for everyone, but the mods we use and the batteries themselves make this impossible.

The internal resistance of the cell has only become a topic of concern because of the heat issue and the fact that the IR of cells is generally on the rise - making even more heat.

In the calculation for a coil should we consider the resistance of the mod itself? We could easily change the info I'm giving to include the mod, so we could say for a 20Amp cell the overall resistance should be 0.21 Ohms. Then if a mod is measured (when freshly cleaned) at 0.1 Ohms should we say it's safe to build a coil at 0.11 Ohms? What would happen then if the wrap was not seen to be damaged and the cell shorted to the tube, bypassing the switch. If the switch was 0.05 Ohms that would leave 0.16 Ohms constantly across the 20Amp cell until the cell is removed (mathematically 26.25Amps).

Of course in this situation the IR of the cell would save the day.

I'm not including the resistance of the mod in my calculations for the coil. In the same vein I'm not including the IR of the cell.

The only reason the cell's IR is being considered at all is the heat that is generated because of this IR. Anything I consider too high will eliminate the cell from my list.

More 'hardcore' subohmers are aware of all this and will measure everything and do the calculation for every build.
The beginners' maths is a straight R=V²/W = 17.64/20 = ~0.88Ohms for a calculated 20Watt vape.
In real life the only way to get 20Watts from a 0.88 Ohm coil with a single cell is with a regulated mod. A mech will fall well short, in a safe way.


If you want to help you already have, for sure. But if you want to help further I'd appreciate it. If we can condense EVERYTHING down so we can include it in a single post, in a way newbie subohmers can understand it'll make it all the more safe.

Of course we could do a partII and partIII later to expand peoples' knowledge, unless we put them in danger of cerebral meltdown! <<< Not a derogatory comment.

way out

At least 80% of the Sanyos that I've seen for sale are protected, and most of them are vaping vendors. So I made the assumption.

muckyboy do you have a link we could look at.

It's so refreshing to see the term 'SAFER' used rather than 'SAFE'.  thumb up As 'SAFE' implies nothing can go wrong.