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Good idea Roscopecotrain.

I think I'll get together with VapingBad and compile a list of the better batteries and their power limits, rather than amps. A chart with the figures listed rather than having to be calculated would make things easier for everyone - as well as safer
I don't think we'll be able to include rewraps though, sources can change like the weather.

Ah, those. I can't remember anything being proved, and although I like to doubt the Chinese, I have to go with the flow and trust that when FT state 'Authentic' that they will be genuine. Until proved otherwise.

Some reports of the wrong cell being delivered, or DOA (0.0Volts) so i don't know.

I'm gonna try and keep this simple, although the fact is it isn't. What I'll attempt is to condense all the info into bite sized chunks that are easy to digest.

There are lots of new cells appearing making wild discharge current claims. So what I'll do is take one specific cell (the AWT 40Amp 2600mAh 18650 from Gearbest) and show you why it won't do what we're lead to believe by numbers.

So, the cell itself:
Looks good eh? Well, frankly no. I'm used to the maths so straight away I can see one warning. Take lines 8 & 9, the continuous and maximum currents. To my eye they're too close together.

eg, take the LG HE4. Continuous Current 20Amps, Peak Current 35Amps. Peak is Continuous + 75%
Take the VTC4. Continuous Current 30Amps, Peak Current 60Amps. Peak is Continuous + 100%
So we can see the difference is quite large.

AWT. Continuous Current 35Amps, Peak Current 40Amps. Peak is continouous + 14%.
That result is not expected. I'd expect any Li-Ion cell to have a Peak at least 35% over the Continuous. Straight away this got me interested in the truth.

So I went on a hunt last night and read through a few reviews. Some were obviously biased for or against this cell, so ignoring them I found a good review from a trusted source. It's actually the same source I got the specifications from:

I wouldn't expect ANYONE to see what's wrong here. Someone with a grasp of Ohm's law would stand a 25-30% chance of spotting it. I work with Ohm's Law every day so I see it like a 100Watt lightbulb in a room with no windows.

Why? Let's say we use this cell at 20Amps. I'm not saying it won't deliver, but what does happen by the laws of physics when it does is quite a shock.

So, V=IR = 20x0.04 = 0.8Volts. If the fresh cell has a voltage of 4.2Volts, when fired at 20Amps the Volts drop to 3.4 instantly.
Okay. This is supposed to be a 35Amp cell, so 35x0.04 = 1.4Volts. So the Volts drop to 2.8. We're bordering on battery homicide here now, that's right on the limit.

Now - the shocker - POWER.
Straight to the crux of it.
at 35 Amps Power = I²R = 35²x0.04 = 49 Watts. That's 49Watts of HEAT being generated inside the cell. That bugger is gonna heat up like a roman candle.

All this would have been worse if I'd used 0.05Ohms for the Internal Resistance.

This stuff isn't all about Current/Capacity - and I'm glad I know enough to spot things like this.

Vape Safe!!

That's a spec 50% over what the manufacturer put on the label, and 36% over their actual (tested) rating. And there is the reason I'm hesitant to recommend the guy any more. He's overrating a lot of batteries these days. If he'd rated them at 20Amps it's erring on the side of safety. But by rating them at 30Amps he's competing with the unsafe money-making profiteers.

I have to add also that the AWTs linked earlier (from FT)are rewrapped 20Amp batteries, 40Amp peak.

It's not easy to cancel a licence. A mate of mine (a landlord) got fined for having a TV in a house that had no electricity supply, and hadn't for 4 months. So whether you have an aerial or not. Whether you have electricity or not. If the TV has a tuner in it (even if it's just analogue) it's deemed capable of receiving live TV and you have to have a licence. If you have a PC and it's linked to the net, then it's deemed capable of receiving live TV over the net, and you need a licence.

Not too sure where 3G/4G smartphones would stand. Maybe one day??

Seems saying you don't watch live TV means squat - there's no way to prove it. That word 'capable' is capable of anything in law.