Requesting suggestions for hard hitting/large battery PV

[jascom]

yzer Thanks again. Beautiful mods. Correct me if I am wrong but I get the feeling that it is a single 18650.

credo Interesting approach. Being a newby to the more esoteric endeavors I will probably avoid stacking batteries. I don't know what 2 Nemesis clones would cost but at this point a BAM seems like more of a sure thing. Thanks for the suggestion though.

SupplyDaddy Thanks for the encouragement. I may give that a try some day. I would like to build my own but every time I go to modders sites and begin to follow threads I get intimidated. Always wanted to learn to carve pipes when I smoked them since I liked working with wood. Electronics are much easier to get ahold of than briar so maybe I'll suck it up and just do it. Thanks for the info and leads.

 

[Subdivisions]

If you stack two 2000mAH batteries the capacity is still 2000mAH, the voltage is what is doubled. Putting them in parallel makes the capacity double. These are both bad things to do, especially when drawing high current, because even the same batteries from the same manufacturer can vary a bit. With stacking both batteries have the same current flow going through them. If one is weaker and has a higher internal resistance than the other then it will get hot and possibly fail. In the parallel mode if one of them has a lower voltage than the other then it will start to draw current off of the higher voltage battery which can cause heat and failure.

 

[jascom]

Subdivisions So in the context of what I am seeking, if I understand what your are saying, I am better off going with something that will take a single 26500 or 26650 battery to achieve a day long vape without the need for a battery change. This will entail less risk? Both the Beast Box and the Shan Mods devices utilize what I am guessing you mean by parallel. The Beast box uses 2 26500s and the Shan Mods unit uses 2 18650s. They both have batteries sitting side by side and not on top of one another. Is that all there is to parallel? Sorry to display my ignorance, but at least I will be easily recognizable the next time we encounter one another as it is very difficult to hide. Thanks for your input.

 

[Credo]

If you stack two 2000mAH batteries the capacity is still 2000mAH, the voltage is what is doubled. Putting them in parallel makes the capacity double. These are both bad things to do, especially when drawing high current, because even the same batteries from the same manufacturer can vary a bit. With stacking both batteries have the same current flow going through them. If one is weaker and has a higher internal resistance than the other then it will get hot and possibly fail. In the parallel mode if one of them has a lower voltage than the other then it will start to draw current off of the higher voltage battery which can cause heat and failure.

Agreed, which is why I gave the link for the 18650 5V NiMH cell.
The logic of going HV is that one could draw much lower currents to achieve identical wattages, and end up with more surface area per coil in the process.

The actual Mah capability of a battery does vary somewhat depending on the current/amperage applied. I.E. using a 5 watt atty will drain the battery half as fast as running a 10 watt atty. With an HV set-up, there isn't as much need to run extra coils in parallel to get a 'hard hitting' rig, as you can just add more winds to a single coil...etc.

 

[ln617]

Fluid Vaper has a Provari upgrade kit that enables it to run a 26*** size battery. Voids the warranty but if you can find a older version of a provari for cheap, you might want to get it a try....

PowerPro 26650 Provari Modders Kit

 

[DrillRX]

Looking for a VV/VW PV that will utilize 2 18650s, a 26500 or a 26650 battery that also hits like a train. I currently am aware of the Beast Box, BAM, Bombshell Stinger, Curve, and Shan Mods. Any opinion on these and other possibilities would be appreciated.

If you can find where to buy one of these, i'm in too. Really like the looks of the mod and atty!

 

[thescientist]

No one else seems to have asked...why? I'm not sure I'd want to have to vape out of something that heavy. Granted I made a corded pv and ran it off an agm 12v battery with a regulator so I get the idea of a long run time vv device but mine wasn't portable at 40lbs.

My recommendation is a high current prismatic cell in any box mod you want (think Dena 30watt or direct drive with premade protection pcb). realistic power density of just the ready to use cell is 185wh/kg and 100amp max draw. Do a quick google search and you can find them. Not sure on external link posting policy yet. Price is under a dollar per watt hour including protection and balancing pcb. I can't remember off hand what the max charging current is but they can easily be charged overnight with the right cc/cv input. 10,000mah prismatic high drain cell, and protection pcb plus box is around $50

 

[jascom]

DrillRX
Nice mod. No luck in finding a place to purchase either. Will keep my eyes and ears open. Did find another one though: Keegan Kreations. He/She makes the Silver DNA 20L and the Black DNA 20. Both will use 1 OR 2 26650s or 1 OR 2 18650s. $175. Definitely on my wish list.

thescientist
Right over my head. I will take your advice to my vape shop owner who builds mods and see what he thinks. Sounds interesting to me. But when your as ignorant as I am everyone else's ideas sound great.

Thanks to everyone for the help and advice.

 

[DrillRX]

No one else seems to have asked...why? I'm not sure I'd want to have to vape out of something that heavy. Granted I made a corded pv and ran it off an agm 12v battery with a regulator so I get the idea of a long run time vv device but mine wasn't portable at 40lbs.

My recommendation is a high current prismatic cell in any box mod you want (think Dena 30watt or direct drive with premade protection pcb). realistic power density of just the ready to use cell is 185wh/kg and 100amp max draw. Do a quick google search and you can find them. Not sure on external link posting policy yet. Price is under a dollar per watt hour including protection and balancing pcb. I can't remember off hand what the max charging current is but they can easily be charged overnight with the right cc/cv input. 10,000mah prismatic high drain cell, and protection pcb plus box is around $50

Why? That's the same question Pruis owners ask. Why do I need a 4 ton pickup when a car can do the same thing.....Answer.....it simply can't do the same thing. Yes they both have four wheels, and yes they all have an engine, and yes they can both haul 15 tons.....oh wait.....maybe not.




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[thescientist]

Why? That's the same question Pruis owners ask. Why do I need a 4 ton pickup when a car can do the same thing.....Answer.....it simply can't do the same thing. Yes they both have four wheels, and yes they all have an engine, and yes they can both haul 15 tons.....oh wait.....maybe not.


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Sorry on the late reply DrillRX, but I actually meant "why" literally. Not in a snarky way. I was inquiring as to the general usage so that I could give the best advice as there might be a solution to the actual problem other than what was presented.

To use your example. If someone asked which hybrid has the best fuel economy on the highway at 65mph the answer is reasonably straightforward. However, if they also happen to be towing a 16ft box trailer full of iron bars I might suggest a vehicle that isn't a hybrid. Of course which alternate vehicle suggested would then be dependent on what the priorities are. Earth friendly, best economy with fully loaded trailer, lowest all inclusive price of ownership when towing, max range between fill ups. etc.

 

[mitchob123]

DZ nutz makes some nice dna20 box mods with 6000 i believe mah batteries.

 

[mitchob123]

Super t will also soon be releasing a simplicity 26650 tube which you could pair with a vv module, but you really wouldnt need to with a 26650, they will hit plenty hard with a rba with little drop off