Do regulated mods have Voltage sag?

[The60WattGUY]

Do regulated mods have voltage sag guys?
I kno with mechs the vape gets weaker and weaker the lower the battery gets...
Ive noticed my regulated mods do somewhat the same but not as bad
Ive noticed when my battery gets half way (according to mod) and below it the vape gets noticely weaker..
Is this a thing or its my batteries?
I was told with regulated the vape is the same till battery dies this is not the case in my experience
Its no biggy was just wondering if they also have some sort of sag?
If so ill just swap batteries at half full

 

[englishmick]

I've noticed sometimes the vape can start getting weaker just before it gets to the point where it shuts down.

I generally take the battery out when it's around 3.5. They say the battery will last longer if you recharge it before it gets down lower than that.

 

[ShowMeTwice]

Do regulated mods have voltage sag guys?

Our batteries do have voltage sag, doesn't matter if they are used in a regulated or mechanical mod.

You are vaping high wattage, 100w, in a mod (any mod) your batteries will not last as long as someone who vapes at lower wattage's. Use better batteries.

Mooch has an excellent article on Facebook explaining battery voltage sag.

Ive noticed when my battery gets half way (according to mod) and below it the vape gets noticely weaker..
Is this a thing or its my batteries?

In all likelihood that's because your regulated mod is reaching its low voltage cutoff point.
Again, due to high wattage vaping.

 

[ShowMeTwice]

Per Mooch:

"The mod doesn't know what the voltage sag of the battery is. It just reacts to the voltage at its input."

from this thread:

Cut-off Voltages of Mods

Hello all, as to me, I am a vapor who sets his mods to less than 20W. I don't need more. Thus, nearly any cell type will work well for me. Atomizers are 1.2Ω or higher. We know that most regulated mods stop working after reaching a certain level...

www.e-cigarette-forum.com

 

[ShowMeTwice]

A regulated mod will experience a voltage drop due to wiring, battery contacts and circuits external to the battery.

 

[Falconeer]

As an Auld Fart vaping happily away at 8 watts. and by modren (sic) standards using Hi Nic juice with a so out of fashion built in, regulated, battery - I have to say I haven't experienced a such a problem.

I suppose this depends and is influenced by one's style of vaping ... belt it hard and it'll go down quicker though the circuit'll do its best to step up to the mark as long as it can, then it won't cos it can't anymore

 

[tj99959]

Do regulated mods have voltage sag

Well ..... it Depends
If I'm trying to vape @ a high wattage/voltage, and it's all a fresh battery can do. Then as the battery fall off fully charged we will experience sag.
A great big 14500 cell in a Robust was a perfect example. Folks wanted to run them @ 4.2+ volts, and wonder why that little mod had so much sag.
But, ... the simple solution was to run them @ 3.4v, and then when they sagged, it was time to change the battery anyway.

So it's no different than a mech mod. If you wrap the coil to vape perfectly @ 4.2v, you will not like a mech mod. Wrap the coil to be perfect @ 3.8-3.6v, and then grin from ear to ear.

 

[Falconeer]

Back in the day some people using mech mods used to put in a "Kicker!" which effectively turned an un regulated mod into a regulated one - just to get round the very problem of batteries getting low.

IMHO a regulated mod will put out the selected power until it can't any more and then it will cut out altogether as it is designed to do for safety.

Even a simple iStick 30w will for a short time fire at 30 watts though the battery is only 3.7 volts. The circuitry kicks the power up.

 

[zoiDman]

...
I was told with regulated the vape is the same till battery dies this is not the case in my experience
...

For Many, that is true. But not for each and every scenario.

I using a Single Coil RDA on a Regulated Single 18650 Squonker. I target my build at 0.4 Ohms. Which gives me the Hit I'm looking for at 25 Watts.

In the Near Perfect world of Forum Mathematics and Ohms Law, that means that my Regulated Squonker needs to Output 3.16 Volts to the RDA to make 25 Watts for that build. A Voltage which is right at the Cut-Off Voltage for the Mod.

So what this means is that even factoring in Efficiency and Variations of Ohms, My Mod is Basically Always in "Buck" Mode if I swap out the battery Before the Mod Cuts Out. ie: The Input Voltage from the Battery is Greater than the Output Voltage to the Atomizer. In this situation, Battery Sage is Undetectable.

Maybe Battery Sage should be thought of as the Farther and Farther we Push a Battery, and the Harder a Mod Boost Circuit has to work to create the Wattages that some users want to use, the More Noticeable the Effects of Battery Sage are.

Also consider that OEM's design Mods to allow some degree of Degraded Performance to occur. Either from Battery Sage or from the Never Ideal Components used in the Power Loop.

The Thinking being a User would rather be able to Vape at 75 Watts even it the Mod is set at say 100 Watts if that's all the Mod can do verses leaving the User Stranded if the output dips below 99 Watts.

 

[The60WattGUY]

I've noticed sometimes the vape can start getting weaker just before it gets to the point where it shuts down.

I generally take the battery out when it's around 3.5. They say the battery will last longer if you recharge it before it gets down lower than that.

My mod doesnt say how much volt is left only a battery % i do have other mods but i havent gotton around to using it yet since they are more for backups, hmm ill just take a guess if it gets weaker ill pop em out? Is that fine?

 

[The60WattGUY]

A regulated mod will experience a voltage drop due to wiring, battery contacts and circuits external to the battery.

That explains it but regulated mods the sag is alot less worse then a mech?

 

[tj99959]

That explains it but regulated mods the sag is alot less worse then a mech?

Not really, the sag is constant, but just more noticeable in the mech.

 

[englishmick]

My mod doesnt say how much volt is left only a battery % i do have other mods but i havent gotton around to using it yet since they are more for backups, hmm ill just take a guess if it gets weaker ill pop em out? Is that fine?

Don't think it's something that needs to be exact. I know that when the battery bar gets down to a certain level I take the battery out and it will show 3.5 - 3.6 when I put it in the charger. If I forget and it's 3.2 not a big deal, just try to keep it in the 3.5 area most of the time.

As far as the vape getting weak, now I come to think of it that mostly happens with my old Provari mod. I use a 1.2 ohm coil on that which is close to the lower limit of what it allows, and it cuts out at 3.5. Maybe the fading thing happens when you get close to the mod's limit.

I have one mod that let the battery go down as far as 2.8 before it cuts out, BB I think. I make sure to take the battery out well before the bar gets to the bottom.

 

[The60WattGUY]

Don't think it's something that needs to be exact. I know that when the battery bar gets down to a certain level I take the battery out and it will show 3.5 - 3.6 when I put it in the charger. If I forget and it's 3.2 not a big deal, just try to keep it in the 3.5 area most of the time.

As far as the vape getting weak, now I come to think of it that mostly happens with my old Provari mod. I use a 1.2 ohm coil on that which is close to the lower limit of what it allows, and it cuts out at 3.5. Maybe the fading thing happens when you get close to the mod's limit.

I have one mod that let the battery go down as far as 2.8 before it cuts out, BB I think. I make sure to take the battery out well before the bar gets to the bottom.

Ah nice when my battery has about 25-30% left and i throw it in my xtar it tells me 3.5-3.6v so thats a good point to start charging? Ill keep that in mind
Also i never vape till my mod turns off
Im to scared ill go below 3.2 or does my mod have a safety for it?
If so id rather vape till its dead then instead of having to constantly check my %

 

[Territoo]

Ah nice when my battery has about 25-30% left and i throw it in my xtar it tells me 3.5-3.6v so thats a good point to start charging? Ill keep that in mind
Also i never vape till my mod turns off
Im to scared ill go below 3.2 or does my mod have a safety for it?
If so id rather vape till its dead then instead of having to constantly check my %

It's not as much about safety, as a regulated mod will shut down before you reach a danger zone. It's more about extending battery life. I'm rough on batteries as I vape a dual coil atty at 75 watts. With that, I have to use a dual battery mod and I vape until I get a low battery indicator. I have to replace my batteries more often than average but I hate changing to freshly charged batteries, so I try not to do it more than I have to.