what batteries to buy for Wismec Reuleaux RX200?

[mike910mx]

Example: Lets say you vape at 96 watts on a 3 battery regulated mod. 96 / 3.2 = 30 TOTAL amps being drawn. Since you have 3 batteries, divide that 30 by 3. That gives you 10 amps per battery.

One other quick question: Say for example, I want to run the RX200 at 100watts for a 0.14 build in an RTA. For the cutoff at 3.4volts, I will do 100/3.4 = 29.41. Then, take 29.41/3 batteries in the RX200, and that equals 9.80. So for that build at that wattage, the most that I would draw on each of the 3 batteries is 9.80 amps? I know you said not to think about resistance of the build in a regulated mod, but I just wanted to throw that in there for example. If this is how I need to be thinking in terms of how I use my regulated mods? I'm really glad I posted here and you jumped on the chance to set me straight.

 

[Vapin4Real]

I have a set of HG2s and 25rs. Both work perfectly in my RX200. I do get about 1 extra day from the HG2s but I always have the other set charged so I never have downtime

 

[speedy_r6]

Ok I followed everything you just said. Maybe the problem for me is that I have previously failed to understand exactly how a regulated mod actually works. So with your 96 watt example above, a regulated mod splits the total amp draw between how ever many number of batteries there are. And with the RX200, using 3.4v as a cutoff, I really need to be looking at the amp draw per battery from 10.2 and 12.6 volts. I didn't think it mattered if your regulated box mod was single, dual, or triple 18650. It would pull the same amps on the battery(s) no matter what, and the only factor that mattered was what you had the wattage set to, and not the total number of batteries in the mod. I've had it in my head that the total number of batteries in the mod only mattered on mechanical mods (box or tubes), and whether or not they were in parallel or series.

So, there really is a benefit to having a triple 18650 mod like the RX200. Sure please do post more later on when you're home. I think it's starting to come together for me now though. I really appreciate your help.

When you have more than one battery in a regulated mod, the load is distributed across them evenly. For example, if we have 3 batteries currently at 4v each in series, we have a series voltage of 12 volts. That is pretty easy to understand. Now, if we are vaping at 120 watts, we are taking 12v at 10 amps, making 120 watts. Since you have already added the batteries together, you are already factoring in the load distribution. That means each battery would be supplying 10 amps.

Now, if we say we have the same 3 batteries at 4v each, but they are in a parallel configuration, we have 4 volts on the input side. If you are vaping at the same 120 watts, it is going to have to draw 4v at 30 amps to get the 120 watts. When you spread the 30 amps out evenly across the 3 batteries, you end up with each battery supplying 10 amps.

Now lets do the math with a dual battery mod. If you have two batteries in series each putting out 4v for a combined 8v, and you are vaping at 120 watts, you are going to be drawing 8 volts at 15 amps. Since the batteries are not parallel, that means each battery is supplying 15 amps. If they are in parallel, you would have 4v going in. It would need to draw 4v at 30 amps to get to the 120w. Since they are parallel, the load is distributed, and that means each battery is putting out 15 amps.

From there, we can see that having that third battery in a mod reduces the amp loading on the batteries. This will typically lead to slightly longer run times. In addition to the amp loading being reduced, a third battery simply gives you additional capacity. A pair of 3.7v 3000mah batteries has a total capacity of 22.2 watt hours. If you have three 3.7v 3000mah batteries, you have a total capacity of 33.3 watt hours. An easy way to understand watt hours is to relate it to a car. Think of the watts you are using as the amount of gas it takes you to drive 10 miles. Think of the total capacity like your gas tank. If you are using the same amount of fuel, but you suddenly have 50% more fuel in the tank, you can go a lot longer before you have to stop.

One other quick question: Say for example, I want to run the RX200 at 100watts for a 0.14 build in an RTA. For the cutoff at 3.4volts, I will do 100/3.4 = 29.41. Then, take 29.41/3 batteries in the RX200, and that equals 9.80. So for that build at that wattage, the most that I would draw on each of the 3 batteries is 9.80 amps? I know you said not to think about resistance of the build in a regulated mod, but I just wanted to throw that in there for example. If this is how I need to be thinking in terms of how I use my regulated mods? I'm really glad I posted here and you jumped on the chance to set me straight.

Essentially, you are correct. Realistically, it will be drawing a small bit more than that, because the mod is not 100% efficient(it has to power the chip and all on the board). I always like to assume an inefficiency factor of 10%. That is probably way too high, but it means I am being off on the side of caution. If the mod were 100% efficient, it would only draw 9.80 amps from each battery. If we add 10% on to the amp draw, it gives us 10.78 amps being drawn from each battery. The LG HG2 batteries that we were talking about earlier are 20 amp batteries. At 11 amps, they aren't even going to be strained.

 

[mike910mx]

When you have more than one battery in a regulated mod, the load is distributed across them evenly. For example, if we have 3 batteries currently at 4v each in series, we have a series voltage of 12 volts. That is pretty easy to understand. Now, if we are vaping at 120 watts, we are taking 12v at 10 amps, making 120 watts. Since you have already added the batteries together, you are already factoring in the load distribution. That means each battery would be supplying 10 amps.

Now, if we say we have the same 3 batteries at 4v each, but they are in a parallel configuration, we have 4 volts on the input side. If you are vaping at the same 120 watts, it is going to have to draw 4v at 30 amps to get the 120 watts. When you spread the 30 amps out evenly across the 3 batteries, you end up with each battery supplying 10 amps.

Now lets do the math with a dual battery mod. If you have two batteries in series each putting out 4v for a combined 8v, and you are vaping at 120 watts, you are going to be drawing 8 volts at 15 amps. Since the batteries are not parallel, that means each battery is supplying 15 amps. If they are in parallel, you would have 4v going in. It would need to draw 4v at 30 amps to get to the 120w. Since they are parallel, the load is distributed, and that means each battery is putting out 15 amps.

From there, we can see that having that third battery in a mod reduces the amp loading on the batteries. This will typically lead to slightly longer run times. In addition to the amp loading being reduced, a third battery simply gives you additional capacity. A pair of 3.7v 3000mah batteries has a total capacity of 22.2 watt hours. If you have three 3.7v 3000mah batteries, you have a total capacity of 33.3 watt hours. An easy way to understand watt hours is to relate it to a car. Think of the watts you are using as the amount of gas it takes you to drive 10 miles. Think of the total capacity like your gas tank. If you are using the same amount of fuel, but you suddenly have 50% more fuel in the tank, you can go a lot longer before you have to stop.

Essentially, you are correct. Realistically, it will be drawing a small bit more than that, because the mod is not 100% efficient(it has to power the chip and all on the board). I always like to assume an inefficiency factor of 10%. That is probably way too high, but it means I am being off on the side of caution. If the mod were 100% efficient, it would only draw 9.80 amps from each battery. If we add 10% on to the amp draw, it gives us 10.78 amps being drawn from each battery. The LG HG2 batteries that we were talking about earlier are 20 amp batteries. At 11 amps, they aren't even going to be strained.

@speedy_r6 I can't thank you enough for taking all that time to set me straight, and not being a d*** about it. I even semi-hijacked kilobeep's thread for a few, although I did just ask for clarification on what was said in his thread. Are you a teacher or something? You sure do have a way of breaking down a potentially confusing topic so that it's easily understandable. I had been safe with my parallel/series mech mod calculations, but I was calculating amp draw on my regulated mods all wrong. I had been thinking all along that they were pulling many more amps on the batteries than they really were. I have to get 3 new 18650's for my RX200, so I'm not going to get the LG HD2 2000mah 25amp batteries that I was considering, thinking I needed that extra amperage. Thank you very much for helping me stay safe. Enjoy the rest of your night my friend.

 

[speedy_r6]

@speedy_r6 I can't thank you enough for taking all that time to set me straight, and not being a d*** about it. I even semi-hijacked kilobeep's thread for a few, although I did just ask for clarification on what was said in his thread. Are you a teacher or something? You sure do have a way of breaking down a potentially confusing topic so that it's easily understandable. I had been safe with my parallel/series mech mod calculations, but I was calculating amp draw on my regulated mods all wrong. I had been thinking all along that they were pulling many more amps on the batteries than they really were. I have to get 3 new 18650's for my RX200, so I'm not going to get the LG HD2 2000mah 25amp batteries that I was considering, thinking I needed that extra amperage. Thank you very much for helping me stay safe. Enjoy the rest of your night my friend.

Nope. Just a lowly IT worker lol. For a mech mod, I would say the HD2 is a good battery as long as you aren't building too low of ohms. For a three battery mod like the RX200, I would go with the HG2 unless you are literally running it at 200w all day long. Using a TFV4 at 100-120 watts, I am more than pleased with the HG2. Even if I run it up to 150w and assume that 10% inefficiency and a cutoff of 3.2v, it is still only pulling 17.2 amps at the max. That still leaves a small bit of headroom. With me only running about 120 at the max, it is only pulling about 13.75 amps, which still leaves plenty of overhead for safety.The HD2 would give a larger safety margin, but at the expense of a significant amount of run time. The Samsung 25R is also a great battery(also a 20A) for the RX200, but I prefer the HG2 simply for the added run time.

 

[foodieksadh]

I started reading the thread above and wow looks like I need a lot of education.
OK. I think i just jumped in head first into the world of Vaping. I just bought an rx200 with a smok tvf4 have the LG and mxjo Batterie 3 each wanted 2 sets of batteries and the the guy only had these. I read somewhere that I should use the q4 coils instead of the t3. So my batteries are charged and I'm ready to start. Any recommendations on the rx200 setting for my first vape.

sirry for the long post.

 

[speedy_r6]

I started reading the thread above and wow looks like I need a lot of education.
OK. I think i just jumped in head first into the world of Vaping. I just bought an rx200 with a smok tvf4 have the LG and mxjo Batterie 3 each wanted 2 sets of batteries and the the guy only had these. I read somewhere that I should use the q4 coils instead of the t3. So my batteries are charged and I'm ready to start. Any recommendations on the rx200 setting for my first vape.

sirry for the long post.

There is no specific coil you should run with it. I just run the q4 coils because I feel they give more flavor than the triples. If you prefer the triples, run those. If you prefer the claptons, run those. If you prefer the 6 coil ones, run those. Just run whatever you feel works best for you.

 

[mike910mx]

Nope. Just a lowly IT worker lol. For a mech mod, I would say the HD2 is a good battery as long as you aren't building too low of ohms. For a three battery mod like the RX200, I would go with the HG2 unless you are literally running it at 200w all day long. Using a TFV4 at 100-120 watts, I am more than pleased with the HG2. Even if I run it up to 150w and assume that 10% inefficiency and a cutoff of 3.2v, it is still only pulling 17.2 amps at the max. That still leaves a small bit of headroom. With me only running about 120 at the max, it is only pulling about 13.75 amps, which still leaves plenty of overhead for safety.The HD2 would give a larger safety margin, but at the expense of a significant amount of run time. The Samsung 25R is also a great battery(also a 20A) for the RX200, but I prefer the HG2 simply for the added run time.

Good to know. Man I am so frickin happy that I posted on this thread and had the chance to learn some things I didn't know. I've subsequently gone on to research more about what our discussion entailed, and I just had it wrong all along how regulated mods work.

Off-topic but I have 2 pairs of HD2's for my noisy cricket that I use with a 0.46ohm build on it, and I'm pretty happy with the performance of those on that mod. Granted, I can't hit the thing for more than 2-3 seconds at a time so they last pretty long with it. I've been barely making it through the day with triple Sony VTC5's from Illumn on my RX200. I'm typically vaping at around 58-64 watts on my TFV4, so I should definitely go with the larger capacity HG2's. I actually just pulled the trigger on triple HG2's 5 minutes ago from Orbtronic. One of the only trusted vendors out of the 4 or 5 that has them left after speaking with their customer support rep. I have never bought batteries from them before. Only from Illumn. Hoping it works out Ok. Thanks again @speedy_r6

 

[mike910mx]

I started reading the thread above and wow looks like I need a lot of education.
OK. I think i just jumped in head first into the world of Vaping. I just bought an rx200 with a smok tvf4 have the LG and mxjo Batterie 3 each wanted 2 sets of batteries and the the guy only had these. I read somewhere that I should use the q4 coils instead of the t3. So my batteries are charged and I'm ready to start. Any recommendations on the rx200 setting for my first vape.

sirry for the long post.

I use the dual clapton 0.35ohm CLP2 coils with my TFV4 on my RX200, and I'm really happy with them. The only other coil I have tried was the 0.2ohm T3 coil that came with my TFV4, and that coil was pretty good too. They're hard to find being sold in singles, so if you want to try more it's likely you'll have to buy a $20+ pack of 5 and just roll the dice. As far as your question about what setting for your RX200, break the coil in for a little initially with a lower wattage and work your way up. If it was me, I'd start at like 50watts and work up a few watts at a time. You'll figure out what you like best.