The brass and aluminum version of the Private V2 telescoping mod at Fasttech is long enough to accomodate three of the 2/3A size NiMH. I doubt the measly, silly millimeter difference in diameter would matter. I wonder if, with top and bottom unscrewed a few threads, it could accomodate four?
$12.71 Private V2 Telescopic Mechanical Mod - brass + aluminum at FastTech - Worldwide Free Shipping
If it has a spring, that should be able to compress an extra millimeter since they're never supposed to be at full compression anyway (which would defeat the purpose of a hot spring, if it has one, or potentially crush the battery if it doesn't).
I think a case could be made for arguing the 15-minute chargers are somewhat safer than those taking hours. It would be convenient to monitor the charging for 15 minutes, whereas if it took hours, they would likely be left unattended. Puck reports good results. In any case, it would [be] handy to have the fast charging option if you were in a hurry, and also have the option to slow charge which would extend battery life.
Given that the case of a blowout is much more probable when charging that fast (fifteen minutes would be 4C on average), I'm going to have to disagree. NiMH are exceedingly unlikely to blow out when slow charged.
The non-Low-Self-Discharge type batteries might be more suitable for vaping because they generally have 15 -20% more mAh capacity and are cheaper. The low-self-discharge would seem to be of lesser importance.
Agreed. It does depend on if you store them; the primary self-discharge is in the first 24-48 hours. This can amount to 10 to 20% of battery capacity, but even losing 500 ma off of 2,500 isn't
that extreme.
I noticed that MorpheusPA, who seems to have a pretty good working-knowledge of batteries, claimed over in the Exploding Battery thread that NiMH is "unarguably safer" than Li-ion.
http://www.e-cigarette-forum.com/fo...ttery-justn-now-exploded-33.html#post12287278
Who, me?
Unarguably safer...within operating specifications. This is pushing it, although I'm reasonably comfortable with your Nomod.
The idea of...for instance, not that I want to give anybody any ideas...using a boost controller or flyback oscillator to ramp the output voltage from a single cell...no.
Any energy storage technology can be pushed past its limits and they tend to get ugly when you do that.
Ask me how I know. Actually, don't, as it's just embarrassing.
I'm still waiting for somebody to suggest using a high-Farad supercap to power a mod. Now there's an idea that just terrifies me.
That hasn't deterred peeps who sell Li-ion and users who already have a lot invested in them from arguing to the contrary.
They're partially right. Most of us these days use LiMn technology, though, which is certainly far safer than Li-ion. Even so, millions of Li-ions get used every day without incident.
The question is this:
Does the slightly smaller size and weight of Li-ion justify the increased risk?
In my opinion, it does not.
Leading question. ;-) The one-third size and a bit less than one-third weight of lithium technology as compared to NiMH (where the batteries do tend to be heavier for identical sizes) is a definite consideration. No gentleman likes saggy pants pockets.
We haven't discussed the cost of NiMH batteries, which includes environmental cost. Balanced against lithium, lithium wins by a nose.
Of the two, I'd rather see lithium batteries heading for garbage dumps. Although non-toxic, NiMH costs more environmentally to create so not recycling them is more of a negative.
Given where the supplies of lithium are, and misch metal (NiMH's parent ore), again, I'd rather have the lithium.
In a crowded subway, I would prefer to be in the company of NiMH vapers. I would prefer that my grandma and grandpa, who have no knowledge of Ohm and his law, vape NiMH.
Again, arguable. We haven't stressed millions of NiMH batteries at high draw by giving them to vapers, and without some testing (which I will not do as I dislike homeowner's insurance claims), I'm not at all sure how well they'll fare.
Batteries constructed for vaping specifically--including 10C+ discharge rates--would be equally dangerous insofar as energy discharge. The electricity doesn't care if it's being discharged from NiMH or lithium.
I've accidentally shorted a 9 V NiMH. My recommendation? Don't do that. I melted the metal.
NiMH does stack much better than lithium does...which is a good thing as otherwise you couldn't get the voltage high enough to vape (or run your camera, but that's another story). But frankly, I consider anybody who stacks lithium to be asking for trouble unless they're taking some rather extensive precautions.
What NiMH doesn't take to well (no battery does, really) is reverse discharge, which will happen when one cell is much lower in voltage than another. Charged separately, that won't be as much of an issue. In a pack, it can be. And it'll kill a battery (even an NiMH runs a good risk of dying spectacularly). So you'd still need a minimum voltage cutoff and care taken in a mod if stacking. Fortunately you should notice the decreased vape before the cell drives under 0 V (yes, they can do that).
