Why always a single battery?

[guruguhan]

I'll start by saying I'm still a beginner...

I've noticed that most (actually every) mod I've seen always uses a single battery configuration. Is there any reason one couldn't make a mod with multiple batteries? Technically, I know there are reasons why they don't, but is it possible? Does it have any negative effect on the voltage, etc?

 

[Thrasher]

well you could make a mod with the batteries in parallel. meaning the MAH would increase and the voltage would be the same.

the problem is in series the batteries could very well cuase problems, they need to be paired together, taken extra care of, more attention needs to be paid to shorts and how properly and evenly batteries are charged etc.

Here is a part of a reply attypop's posted in another thread that gives a little more info on this.

The real issue is stacking batteries. Those smaller batteries have lower C ratings. And the max-amps for batteries DO NOT STACK like voltage does. So your amp limits on the device are the amp limit of ONE battery. And you have double the "oomph" of the doubled voltage pushing current when there's a problem. It's easy (at least twice as easy) to overheat a cell when they are stacked due to that extra voltage in the circuit. So if there's a short, you not only exceed a single cell's amp rating, but you push the excess current twice as hard through that cell.

http://www.e-cigarette-forum.com/forum/general-e-smoking-discussion/470730-7-4v-rba.html


if one battery goes bad then it will/could overdrive the second battery and possibly set off a chain reaction that now includes two batteries melting down. most people dont want the risk and the extra care and responsibility of this kind of setup and opt to use a single battery.

as for could they? i believe the buzz pro and reoVV still use stacked batteries.

 

[Nightshard]

Some mods can handle two 18350's

 

[dr g]

well you could make a mod with the batteries in parallel. meaning the MAH would increase and the voltage would be the same.

the problem is in series the batteries could very well cuase problems, they need to be paired together, taken extra care of, more attention needs to be paid to shorts and how properly and evenly batteries are charged etc.

Here is a part of a reply attypop's posted in another thread that gives a little more info on this.


http://www.e-cigarette-forum.com/forum/general-e-smoking-discussion/470730-7-4v-rba.html


if one battery goes bad then it will/could overdrive the second battery and possibly set off a chain reaction that now includes two batteries melting down. most people dont want the risk and the extra care and responsibility of this kind of setup and opt to use a single battery.

It's those issues, coupled with the use of *unprotected* batteries.

 

[BardicDruid]

Mainly because it a PITA, if you mismatch batts, like using a new one with an old one, both batts will die, and a myriad of other problems. I've got a PureSmoker Prodigy that's 5V regulated and uses two 16340 batts and after a couple of months pairing batts, watching charging times and continually checking capacity (can't do that with a multimeter) I gave up and went back to the single batt mods.