Batteries, amps and pushing the limits!

[Rikiel]

Hi everyone. I'm a long time lurker, first time serious poster.

(Not sure if this goes here or in another place. So feel free to move the thread)

So I've discovered the awesomeness of mechanical mods, and recently completed successful tripple and quad coil setups on some phoenix v1s. Though as a tinkerer I'm always currious if I can push things even farther.

I need to know if stacking batteries increases their amp limit or just their voltages. The main reason for this is that i have some ideas for penta and even septupple coil setups. I'll describe these later if any of you more experienced vapers wanna try building it. But one way or another, I need more power >.> so 2 18350s stacked would give me 8.4 volts which i think is plenty of power for six coils.

Anyways, the setup for six coils would involve setting up three dual coils which are done in series (so like two 2ohm coils making a 4 ohm dual coil) and then setting those three dual coils up in parallel. If each coil is at 2ohms, that would be three 4ohm coils which would be 1.33333 ohms. This still doesnt break the 10 amp limit of some high drain 18350s, but the knowledge would still be helpful.

I hope that description was clear >.>. I would love to hear input!

 

[BigBaby]

I like the idea. Slight inconsistencies in the resistances of your coils will probably be your biggest enemy. How close do you think you can get them all to exactly 2ohms?

 

[Rikiel]

I like the idea. Slight inconsistencies in the resistances of your coils will probably be your biggest enemy. How close do you think you can get them all to exactly 2ohms?

Well a 4/3 wrap usually gets me around 1.8 ohms with 34g kanthal wire which is unfortunately all my local store has. I have 28g on the way. But I really dont see it being that big of an issue. Its pretty consistant at 1.8ohms. But you're right. The problem will probably always be one coil burning hotter than the others, but such is the beast that is multi coil setups eh?

 

[BigBaby]

I think as long as you keep them +/- 1 or better you will be fine. Things just get silly very quickly in series parallel circuits when tolerances get loose.

 

[Rikiel]

I'll keep that in mind. For future food for thought, on a device such as the nimbus, it might even be possible to do an octo coil vertical setup in this way. (Vertical is the best design i can see this working in since the positive and negative leads will be coming from the same side of the dual coils) But with octo coils, you're starting to look at .5 resistances at at least 8.4 volts which is 16.8 amps (with 2 ohm coils of course). And this is still within the pulse limit for some batteries like the orbtronics. So this is where I really need to know if amp limits stack or if they stay the same.

Edit: Oops got my math wrong. I guess it would be 1 ohm with 4 dual coils at 4 ohms each. 4/4 = 1 >.>. Which is incredibly 8 amps at 8.4 volts.

 

[BentWookie]

Have you considered trying with a MNKE 18650 which is supposed to support a 20 amp continuous draw?

I'll keep that in mind. For future food for thought, on a device such as the nimbus, it might even be possible to do an octo coil vertical setup in this way. (Vertical is the best design i can see this working in since the positive and negative leads will be coming from the same side of the dual coils) But with octo coils, you're starting to look at .5 resistances at at least 8.4 volts which is 16.8 amps (with 2 ohm coils of course). And this is still within the pulse limit for some batteries like the orbtronics. So this is where I really need to know if amp limits stack or if they stay the same.

Edit: Oops got my math wrong. I guess it would be 1 ohm with 4 dual coils at 4 ohms each. 4/4 = 1 >.>. Which is incredibly 8 amps at 8.4 volts.

 

[ScottP]

Hi everyone. I'm a long time lurker, first time serious poster.

(Not sure if this goes here or in another place. So feel free to move the thread)

So I've discovered the awesomeness of mechanical mods, and recently completed successful tripple and quad coil setups on some phoenix v1s. Though as a tinkerer I'm always currious if I can push things even farther.

I need to know if stacking batteries increases their amp limit or just their voltages. The main reason for this is that i have some ideas for penta and even septupple coil setups. I'll describe these later if any of you more experienced vapers wanna try building it. But one way or another, I need more power >.> so 2 18350s stacked would give me 8.4 volts which i think is plenty of power for six coils.

Anyways, the setup for six coils would involve setting up three dual coils which are done in series (so like two 2ohm coils making a 4 ohm dual coil) and then setting those three dual coils up in parallel. If each coil is at 2ohms, that would be three 4ohm coils which would be 1.33333 ohms. This still doesnt break the 10 amp limit of some high drain 18350s, but the knowledge would still be helpful.

I hope that description was clear >.>. I would love to hear input!

Wow. Why not just pull a spring out of your car/truck suspension, and wire that up to a 220v plug? Maybe use a couple pair of blue jeans for wicks and a 5gal bucket for a tank.

 

[Rikiel]

Wow. Why not just pull a spring out of your car/truck suspension, and wire that up to a 220v plug? Maybe use a couple pair of blue jeans for wicks and a 5gal bucket for a tank.

FOR SCIENCE! Lol!

 

[Rikiel]

Have you considered trying with a MNKE 18650 which is supposed to support a 20 amp continuous draw?

I didnt know those existed! Thanks for the tip! Though i'm pretty sure you would need to stack 2 18350s to get at least 8.4 volts for this to work. But wow 20 amp limit...

 

[BigBaby]

No stacking your batteries is just going to double your voltage. If you have enough batteries you could use 4 batteries putting two stacks of two in parallel. This would still give you 8.4v and more or less distribute the draw between the two stacks.

 

[Rikiel]

No stacking your batteries is just going to double your voltage. If you have enough batteries you could use 4 batteries putting two stacks of two in parallel. This would still give you 8.4v and more or less distribute the draw between the two stacks.

That would be a neat looking mod

 

[ScottP]

I know I made my last post in jest, but now I am thinking about trying denim wicks.

 

[Rikiel]

I know I made my last post in jest, but now I am thinking about trying denim wicks.

Its just cotton isn't it?

 

[ScottP]

Its just cotton.

Yes but a highly durable weave of cotton, not any more heat resistant or anything, but maybe less fraying and probably a bit different in how it actually pulls in juice.

 

[Rikiel]

Yes but a highly durable weave of cotton, not any more heat resistant or anything, but maybe less fraying and probably a bit different in how it actually pulls in juice.

Would be interesting to hear about! . Maybe we can both do some proof of concepts for our ideas and post our findings soon :3

 

[BentWookie]

You would probably have to go to lower resistance coils but 20 amps may be enough (haven't done the math yet). BTW 20 amps is the rated continuous not the max. Max rated is 30 amps and max pulse is 60. Although at 1500 mah it may only give you 2 minutes operating time. lol.

I didnt know those existed! Thanks for the tip! Though i'm pretty sure you would need to stack 2 18350s to get at least 8.4 volts for this to work. But wow 20 amp limit...

 

[Rikiel]

You would probably have to go to lower resistance coils but 20 amps may be enough (haven't done the math yet). BTW 20 amps is the rated continuous not the max. Max rated is 30 amps and max pulse is 60. Although at 1500 mah it may only give you 2 minutes operating time. lol.

Bahah! Thats awesome. FOR SCIENCE!

I have a proof of concept thread set up if you want to check it out. Finished a quad coil at 1.5 ohms. Fires well at 10 watts on a VV device!

 

[LucentShadow]

Hi everyone. I'm a long time lurker, first time serious poster.

(Not sure if this goes here or in another place. So feel free to move the thread)

So I've discovered the awesomeness of mechanical mods, and recently completed successful tripple and quad coil setups on some phoenix v1s. Though as a tinkerer I'm always currious if I can push things even farther.

I need to know if stacking batteries increases their amp limit or just their voltages. The main reason for this is that i have some ideas for penta and even septupple coil setups. I'll describe these later if any of you more experienced vapers wanna try building it. But one way or another, I need more power >.> so 2 18350s stacked would give me 8.4 volts which i think is plenty of power for six coils.

Anyways, the setup for six coils would involve setting up three dual coils which are done in series (so like two 2ohm coils making a 4 ohm dual coil) and then setting those three dual coils up in parallel. If each coil is at 2ohms, that would be three 4ohm coils which would be 1.33333 ohms. This still doesnt break the 10 amp limit of some high drain 18350s, but the knowledge would still be helpful.

I hope that description was clear >.>. I would love to hear input!

You can arrange two batteries in series to double the voltage, or in parallel to double the max current (or amount of time at normal current.) Either way, since watts equals voltage multiplied by amperage, your available power doubles.

Since the coil setup that you describe (8x2ohm in series/parallel) needs the higher voltage to drive it, putting them in series would be the best option for two batteries:

8.4 volts, 8.4 amps, 1 ohm, 70.56 watts

You'd need to use 8x2ohm all in parallel to get the same performance with two batteries in parallel:

4.2 volts, 16.8 amps, 0.25 ohms, 70.56 watts

Either way, each individual battery would have the same load.

As mentioned, you may be better off putting 4 batteries in series/parallel for doubled voltage and current capability, which quadruples the max power. Though, I'd advise being very mindful to monitor the batteries a bit more carefully in that scenario. That's a lot of stored energy, there.

ETA- I should add that I'd also reinforce the earlier warnings to be very careful with the calculations and measurements, as this idea is using an extreme amount of power, due to very low resistance. It would be especially difficult to verify a total resistance of 0.25 ohms, in particular, since many meters are off by about that much when reading resistance.