Do any mods run multiple batteries in parallel?

[Mutescream]

It occurred to me that the inherent problems to stacking batteries are largely due to them being in series. I think stacking would be a lot less of a problem, if it were done in parallel.

The batteries would equalize each other in level of charge. Neither one would be providing a significant resistive load on the other. Not to mention the current available would be additive (such as two of those 30A 18650 batteries side by side should be able to deliver 60A).

There must be a reason this isn't being done, so that is why I am posing the question.

 

[Brennan4x4]

interested

 

[Dampmaskin]

My guess is size. After all, if size is not an issue, you could just get a Legal Vape 4000.

 

[Mutescream]

My guess is size. After all, if size is not an issue, you could just get a Legal Vape 4000.

My biggest objections to that would be noise level, gas fumes, and lack of good seating/locomotion.

 

[Ryedan]

You could get one of these and stack big batts in series. Go big or go home ...

Or do it with your Vamo.

 

[Stosh]

Size and shape are drawbacks, the batteries would be best situated side by side, and a tube negates that. Another drawback would be the wiring necessary to the 510 connector and the switch design necessary to use with high amperage without adding it's own resistance.

That said it would be a good design for those vapers that like to run very high amperage and wattage. The design considerations I alluded to above could be overcome, and a parallel configuration with doubling of the battery amp rating would create a safer vape with longer lasting battery life since they would not be stressed as much as a single battery.

The problem with the high wattage using high amperage & low resistance is it's simply a poor design. The better alternative to attain high wattage is to increase the voltage. After all at home when you need higher power for say an air conditioner, electric stove or clothes dryer, you don't lower the resistance, instead you use a 220 volt outlet in place of a regular 110 volt.

 

[Mutescream]

To be truly fair, we do a lot more than just increase the voltage for home appliances. We give them multi-phase AC and additionally allow them to have a much larger current draw than a typical circuit gets. We also give them dedicated circuits.

I get it on the switch, and keeping the resistive load down. However, were we to have a 2:1 step up transformer before the switch, you would then have the same electical power offered by a series stack (and still get away without a bunch of the risk).

Which does get us back to size. This could be smaller than an MVP2, which seems pretty popular these days.

 

[p.opus]

If you look at the internals of the MVP, it actually looks as if they are using two LIPO cells in parallel.

http://www.e-cigarette-forum.com/fo...ona-mvp-v1-thought-you-guys-may-want-see.html

 

[DavidOck]

Transformers will not work with DC, and have a lot of losses with pulsed DC...

 

[Mutescream]

Transformers will not work with DC, and have a lot of losses with pulsed DC...

Damn. You're right. Which means this would only be useful for a mech mod, or require some more advanced circuitry than the average hobbyist could fit into a reasonably sized unit.

That said, I would guess this sort of thing could support a quad coil top, as a mech.

 

[edyle]

It occurred to me that the inherent problems to stacking batteries are largely due to them being in series. I think stacking would be a lot less of a problem, if it were done in parallel.

The batteries would equalize each other in level of charge. Neither one would be providing a significant resistive load on the other. Not to mention the current available would be additive (such as two of those 30A 18650 batteries side by side should be able to deliver 60A).

There must be a reason this isn't being done, so that is why I am posing the question.

It certainly is not unique to vaping.
Connecting batteries in parallel has it's own nuaces, and if both batterys are exactly matched it should work fine.
As long as they stay matched;

I wouldn't want to just connect to high powered battery to each other and leave them just sitting there sort of competing against each other; it's like leaving a fully charged battery on the charger. Its stressfull to the battery.