Mech Mod Build Help

[SCoobz]

Hi i am sorry if this has already been asked, but i have look all over and still haven't found that answer i have been looking for. I have got myself a mech mod (Nemesis clone) and i want to know if you can have other types of coils in it eg Clapton. i have looked at mech mod build and they show you the simple 6 or 5 wrap coil. I have they mutation x v1 rda and a Samsung 25r battery. Would this set up good and safe to use with more complex coils, if not what do you suggest. Thanks for your time.

 

[Eskie]

It's not the style of the coil as it is the proper resistance of the coil.

 

[IMFire3605]

The only limit you would have is the resistance (ohms) of your coil as the coil resistance is your only other safety and throttle along with what battery you use, you already listed one variable that matters, the battery (Samsung 25R = 20amp Continuous Safe Discharge Rate at 2500mah). So a 20amp load is the maximum the mod, RDA, and battery all together can handle. 4.2v is the fresh charge on a battery, and knowing a mech doesn't regulate the power output down without any restriction, what the battery has available fresh charge is the critical state, we use this formula -> Voltage/Resitance=Final Amp Draw (and as the battery slowly decreases from 4.2v down to a minimum safe voltage of 3.0v suggested lowest discharge, here are some examples to show you.

4.2v/1.0ohms=4.2amps
4.2v/0.5ohms=8.4amps
4.2v/0.25ohm=16.8amps

With Mech+RDA combinations when I run them, the lowest I ever build is 0.25ohms, though my general builds are in the 0.4, 0.45, to 0.5ohms range (about 50% the maximum CDR the battery can sustain), reasoning behind this, as a battery ages due to standard use, charging, high stress (pushing toward its maximum discharge rating), and the biggest killer is heat which high stressing causes, the Mah and C rating of the battery decrease, these 2 stats determine a battery's CDR, so six months of above average stress, charge and discharge, a 20amp CDR battery could in technicality be only a 10amp CDR battery when the dance is done.

1) Get a good Ohm Reader or Digital Multimeter to check your Ohm reading before ever firing a coil on your mech, get a good grasp of using the "Ohm's Law" formula above to test if you are being safe or not.
2) Bookmark this -> www.steam-engine.org <- Has a lot good tools for vaping including an Ohm's Law Calculator and a Coil Building Simulation Calculator
3) Be safe out there

Resources also check out
@Mooch <- Resident Battery Model Tester, his charts are a great reference to stay safe
@Baditude <- His Blogs have a lot of great, valuable information for everyone from beginner to advanced.

 

[BrotherBob]

Welcome and glad you joined.

 

[SCoobz]

Thanks for answers much appreciated so when will you know your battery has drained to much. Can't you use until it is dead? is there better battery's out there? Sorry for all the question just wanted to do it safely and have my mind at rest when i use it. I will have a look at them sites IMFire3605 thanks Glad to be apart of this

 

[Continuity]

There aren't really many 'better' batteries than the 25R - personally, I like using the 30Qs in my regulated mods.

Sony and LG, for example, make some *true* 30A batteries, but the only potential advantage to these is that you'd be able to build coils with a little lower resistance, and pay for it by the cells having a lower capacity. (more Amps = lower capacity)

On a mech, because they aren't regulated, you know when the batteries are drained because the vape keeps getting weaker from the first toke onwards - most people find that the cell's drained to around 3,7V by the time the the vape's become unsatisfactory.

Most regulated mods say 'Low Battery' when the cells are between 3.1-3.5V - with most around 3.3V.

 

[Baditude]

when will you know your battery has drained to much. Can't you use until it is dead?

Most mech users, over time, learn when to replace their battery from experience. The vape experience will be much poorer than when using a freshly charged battery. Batteries should not be drained lower than 3.2 volts. Drained lower than this could ruin the batteries.

For new mech mod users, you can get an inline 510 voltage tester. This meter attaches to the 510 connection of the mod in place of the atomizer, and will give you the battery voltage.

is there better battery's out there?

Depends upon what your needs are. The Samsung 25R is a great battery that provides 20 amps CDR and 2500mAh. You could go with a few other batteries that would give you those 20A with additional mAh (capacity), namely:

LG HG2 3000mAH 20A
Samsung 30Q 3000mAh 20A
AW 3000mAh 20A
​

LG makes a few 30A CDR batteries which would allow you to build a little lower in coil resistance, but you would lose some capacity (mAh), specifically 1500mah.

The most important thing to know is matching coil resistance with your battery's amp limit; Use an Ohm's Law calculator.

Explain It To The Noob: Ohm's Law Calculations

A Beginner's Guide to Your First Mechanical Mod
​

​

 

[Forkeh]

Thanks for answers much appreciated so when will you know your battery has drained to much. Can't you use until it is dead? is there better battery's out there? Sorry for all the question just wanted to do it safely and have my mind at rest when i use it. I will have a look at them sites IMFire3605 thanks Glad to be apart of this

No you don't want to use it until it's completely dead. If you do that it won't be safe to charge again. I believe that level is somewhere around 3.2 volts. I recommend you don't drain your batteries any lower than 3.7 though. I don't think you'd want to. You're not going to get a satisfactory vape on 3.7 or lower.

Once you get a little experience under your belt, you'll just be able to ballpark when you need to charge, based on voltage drop, and therefore quality drop. Until then, you can get yourself a multi meter and test your batteries periodically. A multi meter is an essential tool anyway, if you're going to be using mechs. Useful for many things. You'll be able to test a suspect battery, if you ever have reason to believe it's been overcharged, or drained too much to be used again safely. You'll be able to test the health of the battery, see if it's still holding its full capacity a couple months after you buy it. This will help you determine when it's time for new batteries. And if you ever get a suspect reading from an ohm meter, you can use your multi meter as a back up, to confirm the reading.

 

[SCoobz]

Thank everyone been on then website and done a lot of reading up. Found out what i wanted to know and now i can vape happy THANKS AGAIN