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Ah, explains the confusion dafellon. LG are still using the old ICR reference. More precisely it's a hybrid. Though it's not technically an IMR it is 'safer chemistry'. So it's safe to treat it as an IMR because it behaves exactly the same.

Samsung batteries are INR (25R/20R), yet again they are 'safer chemistry'- they behave the same so are also considered an IMR.

As vapers we try and keep things simple for others. However, as you have discovered, once we dig a little deeper the little things begin to appear a little bigger than they are.

The HE's are safe to use as IMR, as are the Samsungs.

The term 'IMR' goes hand-in-hand with 'safer chemistry'. Hope this helps 

ETA: It's not often we get asked these questions. In the vaping community much of the advice is taken on trust. I'm glad you're asking these questions - but there's a lot to learn. I don't know 10% of it all, but I know enough to stay safe.


Further reading, a little chemistry.

It'll work, but there are other, safer batteries that would work better. I'd personally recommend buy a couple of 25Rs if I had the sig.
Now were getting somewhere. So would you recommend the 25R over HE4 or just for that device or any other series mod or regulated device?

Mistakes happen - it's definitely an ICR.
Based on the discussion, it's a pretty big mistake?

dafellon I would agree with all the points Ripshod raised and like to address 2 points you raised:

"The MAH rating is what is of interest for this battery"
I would say this is the least important, you need to ensure that the battery is capable for the application and in e-cigs the maximum continuous discharge rate and safety should be addressed first.

"Unprotected ICR!! Why is this relevant? What do you mean by unprotected?"
ICR is the chemical type (more family) of the battery (anode chemistry), it is a cheap type of battery optimised for capacity and not safety or output current, Panasonic often have a graphic showing this on their data-sheets. But more importantly for us if they go into thermal runaway they are far more violent than IMR/safer chemistry and have a point of no return where the chemical reaction that can cause flaming etc will continue even if the condition which started it is rectified. I would only use ICR in quality low power regulated devices < 15 W, I have some in power banks but never use them for vaping.

From a Panasonic NCR18650B data-sheet.  IMR in the top-left (safest), Cobalt based (ICR) and Nickel based (NCR/NNP) along the bottom (least safe)


Unprotected simply means the is not protection module on the battery, these can fail or get damaged by static so should never rely on only these to ensure your safety.


If you want to learn more there are lots of links at the bottom of the last page of the guide in my footer.

I do find your remark regarding the VTC5, and me simply basing credibility on that fact that they are showing as 'in stock' interesting. Anyone showing VTC5s in stock, no matter who they are should be regarded with a massive spoonful of doubt.


ETA: In the meantime you can entertain yourself here: dampfakkus.de/
A pretty large DBase, but check out the test results - shows the difference between specs and real-life.