Regulated Mod Amp Draw Confirmation

[m.scott]

I've been vaping for a few years now and I just realized I've been stuck thinking about amp draw in terms of mechs but I want some confirmation.

In selecting batteries for the RX200 (3 cells in series):

• Vaping <=80 watts
• Batteries never below 3.2

In this scenario the max amperage draw would be 8.3amps (80/3.2*3). I could use 10amp batteries (LG MJ1, 10a, 3500mAh).

Beside things like, what if you want more than 80 watts, what if you accidentally drain beyond 3.2, pushing cells to their limits is bad, etc, this is theoretically correct right? I'll likely just stick with LG HG2s but I just want someone to tell me I'm thinking correctly because battery fear is real.

 

[Rabbit Slayer]

You could but I, personally, wouldn't use less than 15A cells

 

[m.scott]

Why is that? Am I technically incorrect? Are you factoring the effeciency of the chip or effects of internal resistance?

 

[cascadian]

I've been vaping for a few years now and I just realized I've been stuck thinking about amp draw in terms of mechs but I want some confirmation.

In selecting batteries for the RX200 (3 cells in series):

• Vaping <=80 watts
• Batteries never below 3.2

In this scenario the max amperage draw would be 8.3amps (80/3.2*3). I could use 10amp batteries (LG MJ1, 10a, 3500mAh).

Beside things like, what if you want more than 80 watts, what if you accidentally drain beyond 3.2, pushing cells to their limits is bad, etc, this is theoretically correct right? I'll likely just stick with LG HG2s but I just want someone to tell me I'm thinking correctly because battery fear is real.

If your looking for someone to tell you that using 10A cells in the RX200 is a good idea, hopefully you won't find anyone. Wismec recommends 30A cells for a reason. So unless Wismec releases a new firmware that caps the maximum wattage at 80 or you physically remove the + button from the device 10A cells just aren't a good idea. Technically your HG2 cells aren't even suitable but the risk involved in doing so is minimal in comparison.

 

[m.scott]

Thanks for the reply. Can you explain technically why that is? I'm just trying to avoid the old don't vape @ .2 or you're going to blow your face off mentality when clearly most have accepted this as safe. I'm not saying I'm going to use 10amp cells, I just want to understand batteries and regulated mods.

 

[m.scott]

Oh sorry I misread your post. Ok so it's technically correct. It would be perfectly safe.

TBH your post frustrates me. Maybe I'm scarred by the subohm arguments of a couple of years ago. To reach 30 amps you'd need basically dead batteries vaping near 250 watts. I know the majority of users aren't using 30 amp batteries so are you saying that people are being unsafe using the typical 20amp cells? I vape at 50 maybe 55 watts.. I used 80 in my example to be extreme. I could vape at 100 watts with the levels I run my batteries at. I've run my batteries in the RX below 3.5v exactly once and only to see how long the rx200 would go. So you're saying it's not a good idea for me to use 10amp cells? Sorry man I know I'm being harsh but I've been the victim of too many "experienced" vapers who come at people with soft arguments. Man I left ecf because of this kind of stuff.

 

[Zamazam]

Consider this, using 10 amp cells in series still gives you 10 amps at 12.6V when charged to 4.2V. Lower CDR rated cells will develop internal resistance much faster when run near or at their CDR when compared to 20, 25, or 30 amp cells. Discharging the cells to 3.2 even 3.0V is fine, it just will shorten the life of your cells by roughly 10-15% overall.

Considering the prices for LG 20 amp 3000Mah batteries in comparison to 10 Amp CDR cells, you are better off with the extra Mah and 20 amp capacity for a few bucks more. I use the Brown LG's in my RX200 and they work wonderfully.

 

[cascadian]

Oh sorry I misread your post. Ok so it's technically correct. It would be perfectly safe.

TBH your post frustrates me. Maybe I'm scarred by the subohm arguments of a couple of years ago. To reach 30 amps you'd need basically dead batteries vaping near 250 watts. I know the majority of users aren't using 30 amp batteries so are you saying that people are being unsafe using the typical 20amp cells? I vape at 50 maybe 55 watts.. I used 80 in my example to be extreme. I could vape at 100 watts with the levels I run my batteries at. I've run my batteries in the RX below 3.5v exactly once and only to see how long the rx200 would go. So you're saying it's not a good idea for me to use 10amp cells? Sorry man I know I'm being harsh but I've been the victim of too many "experienced" vapers who come at people with soft arguments. Man I left ecf because of this kind of stuff.

In a fictional device that utilizes 3 18650 cells in series that was capped at 80W, the use of 10A cells would not only be safe but desirable from a battery capacity standpoint. The RX200 is not an 80W device it is a 200W or 250W device depending on the firmware installed. It really doesn't matter that you only use it at 80W from a safety standpoint. The fact is that the device is capable of discharging the installed cells at over 26A. With a 20A cell that is possibly unsafe. With a 10A cell that is very unsafe. In most industries a margin of error is built into products. In the vaping industry manufacturers rely on the user to use a suitable cell that provides that margin of error. If you use an unsuitable cell there is no margin of error for safety.

"I'm only human" is an excuse many use when describing how they made a mistake. Have you ever done anything you would later regret? Possibly describe yourself as stupid afterward? Maybe when you were drunk? Just because you never use your mod at more than 80W doesn't prevent your mod from accidentally being used at more than 80W by even yourself.

 

[m.scott]

Consider this, using 10 amp cells in series still gives you 10 amps at 12.6V when charged to 4.2V. Lower CDR rated cells will develop internal resistance much faster when run near or at their CDR when compared to 20, 25, or 30 amp cells.

Yeah the head room principle. I can dig that, plus battery mooch gave a lackluster review of the 10amp batteries I quoted earlier. I've got those HG2s in practically everything with VTC4s or HB6s for mechs.

If you use an unsuitable cell there is no margin of error for safety.

Eh not worried about it. If I can manage not to shoot my face off with a firearm, I think I can manage not to shoot 250 watts into my face. If I ever did, I'd probably deserve being removed from the gene pool.

Thanks all.

 

[HondaDavidson]

The reason to use the higher amp battery..... is you are human. Being thus you can make mistakes. 30 amp batteries allow for more safety. Just in case you accidently exceed you self imposed limits.

Sent from my SCH-I605 using Tapatalk

 

[Jim_MDP]

Don't forget... current JoyeTech mods reset to MAX WATTAGE after an update.

Surprise!

 

[cascadian]

battery fear is real.

Eh not worried about it. If I can manage not to shoot my face off with a firearm, I think I can manage not to shoot 250 watts into my face. If I ever did, I'd probably deserve being removed from the gene pool.

Thanks all.

Well... good luck to both of you in the future then.

TBH your post frustrates me.

I know how you feel.

 

[nightshard]

Manufacturers require 30A batteries to cover their asses, they know that most people use 20A but asking for more doesn't cost them anything.

When stacking batteries in series it doesn't matter if it's two three or ten, they will have the same amp rating as a single battery.

 

[cascadian]

Manufacturers require 30A batteries to cover their asses

And how is that different than in other industries? I am pretty sure that a 2016 Corvette isn't going to blow up at 6501 rpm. But red line is clearly marked on the tachometer at 6500. Does a clothes dryer draw 30 Amps? Nope, not even the old ones that draw between 20-22 Amps during motor start up only. How come you are required to to use a 30 Amp circuit breaker for the dedicated circuit based on National Electric Code? A budget PC from Walmart only uses 25 Watts with the included components. But it comes with a 65 Watt power supply. Why?

A margin of error for safety and reliability. You use it in every other part of your life whether you realize it or not. Why not use it when vaping also?