dual coils & battery drain, help please

[deweylasv]

I've recently discovered the dual coil thang. Lots of vapor! But I think I need a better battery system. I'm using a 380mAh auto (w/o automatic kill switch), I don't know.why it doesn't kick off at 5 secs, but I'm okay with it since I probably wouldn't get much hit if it did.
My problem is the LR is draining my battery super fast, my direct pass-thru kicks off too fast (before I fan get a good hit).

 

[cactusgirl]

Dual coils are fantastic for vapour production, however, they were designed for a larger battery capacity. You really need 650mahs and up, otherwise you risk killing your battery. If your determined to continue using the dual coils, your best bet is to upgrade your device to something that can handle the extra power consumption. Ego, Riva, or the like, would work well.

 

[deweylasv]

I've recently discovered the dual coil thang. Lots of vapor! But I think I need a better battery system. I'm using a XL 380mAh auto (w/o automatic kill switch), I don't know.why it doesn't kick off at 5 secs, but I'm okay with it since I probably wouldn't get much hit if it did.
My problem is the LR is draining my battery super fast, my direct pass-thru won't work on the duals, kicks off too fast (before I can get a good hit) and my XL manual kicks off too soon as well. I'm sure the answer is a 5 volt system that'll work with LR, and not turn itself off after 5 seconds, but can't find anything on any website. Or am I barking up the wrong tree using duals, I want super huge hits. By the way I'm using duals from Madvapes, (2*3.2ohm), so I'm at 1.6 ohms. Please advise.

 

[deweylasv]

So the answer is simply more.power? 650 & higher? What about the 5 sec cut off built into most batts?

 

[Retriever]

As I understand it, there is no 5 second cutoff on an Ego or Riva.

 

[deweylasv]

So the answer is simply more.power? 650 & higher? What about the 5 sec cut off built into most batts?

I'd like to add I'm using the 808-D dials, will they work with your recommendations?

 

[mooreted]

That's an aweful high drain for little batteries. You might want to move up to a variable voltage mod or higher voltage like a Riva, Kgo, E-power. There are also 5v and 6v mods.

Sent from my easy chair using brainwaves.

 

[Vapoor eyes er]

With dual coil the batts should be a minimum of 650 mah but be careful as you may damage the batt.
Batt Info
single coil 100 mah= 1 hr vaping
dual coil 100 mah= 1/2 hr vaping
Most batt's performance drops off a cliff at 50% discharge so you really can't expect the 380 mah to perform well with dc. Should also bge using a manual batt - less prone to damage from juice and puts the vaper in complete control of the vaping. But be forewarned about possible batt damage.
Good Luck, Vapoor.

 

[mooreted]

Oops, I replied to your other thread.

Yes, you need higher mAh batteries for low-resistance equipment.

Sent from my easy chair using brainwaves.

 

[deweylasv]

With dual coil the batts should be a minimum of 650 mah but be careful as you may damage the batt.
Batt Info
single coil 100 mah= 1 hr vaping
dual coil 100 mah= 1/2 hr vaping
Most batt's performance drops off a cliff at 50% discharge so you really can't expect the 380 mah to perform well with dc. Should also bge using a manual batt - less prone to damage from juice and puts the vaper in complete control of the vaping. But be forewarned about possible batt damage.
Good Luck, Vapoor.

What's with the possible damage, is it because of the LR, is there a battery or mod, that will handle the LR?

 

[markfm]

On a pass-through, if it is a true simple one, no built-in battery, you should use a dedicated wall wart power supply, not your computer (maybe you are, I just post this in most places).

That said, the necessary amps is I = V/R. For a USB power supply running at the lower end of the range, 4.8V, and a 1.6 ohm dual coil, that means 4.8/1.6 = 3 amps.

For readily-available USB wall-warts, the highest I've been running across typically is 2amps output, not enough to drive the DC. If the DC does work it would be because of voltage sag on the power supply, it's not a good thing to over-stress a power supply like that.

A battery-based mod is where it's at for the dual coils, one with enough oomph.

 

[sandybeach]

I use a dual coil on a Kgo and the battery charge lasts a full day.

 

[madsen6466]

I rock the eGo Mega Dual Coils, I think they're recommended for a 600mHz battery or larger, they work well on my 900s... fwiw

 

[cactusgirl]

I'd like to add I'm using the 808-D dials, will they work with your recommendations?

I think you can get the Riva with 901 threading (901 is compatible with 808). The Ego is a 510 threaded device but you can also get a 510 to 808 adaptor which would allow you to use 808 threaded cartos on it. Alternatively, there are also 510 dual coils.

 

[wv2win]

Just another limitation of mini battery models. With my 1800 mAh battery and heavy vaping, I get 13+ hours using dual coil cartos. The bigger the battery, the better.

 

[deweylasv]

On a pass-through, if it is a true simple one, no built-in battery, you should use a dedicated wall wart power supply, not your computer (maybe you are, I just post this in most places).

That said, the necessary amps is I = V/R. For a USB power supply running at the lower end of the range, 4.8V, and a 1.6 ohm dual coil, that means 4.8/1.6 = 3 amps.

For readily-available USB wall-warts, the highest I've been running across typically is 2amps output, not enough to drive the DC. If the DC does work it would be because of voltage sag on the power supply, it's not a good thing to over-stress a power supply like that.

A battery-based mod is where it's at for the dual coils, one with enough oomph.

I got the pass-thru at myvapestore, along with 2 amp home and car adapters. It works awsome with most my 808D carts, sometimes burning though, but the duals don't ever burn!

 

[markfm]

That makes sense. The 2A power supply can comfortably drive down to 2.5 ohms at a full 5V USB output, which at 10W power (5V x 2A) will be good for some eliquids though a bit too much for others. I use variable voltage nowadays, but tend to be at around 8W, which would be like using a classic 3 ohm carto on a 5V PT.

 

[classwife]

I merged your duplicate threads.

 

[dormouse]

You may have damaged your battery's protection circuits and after that it may start not holding charge as well or may even be dangerous to charge. The dual coil should never have been put on a slim battery. Slim batteries should be using things that are 2.5 to 3 ohms single coils (a 2.5 ohm dual coil won't work either because it's 2 5 ohm coils and works on high voltage mods.)

In general, anything under 2.5 ohms belongs on a fat battery model or mods. And even the mass manufactured fat battery models (Ego etc) are occasionally damaged by 1.5ohms. Some people will only go that low on mods.

If you want something with a big battery and 901 connection (901 connection with work with KR808D-1 cartos only IF the socket provides appropriate airflow for KR808D-1. In general I think the threaded end of the battery to have a slotted post to let air in?). You are also used to using 3.7v so you probably don't want a 3.4v big battery. Ones you can research (as to how well they work with KR808D-1 cartos and what their real voltage is) are the Kanger Vgo version that is KR808D-1 threaded (there is also a 510-threaded version), Igo, the Riva 901's at Liberty-Flights.com (I believe they have a slotted post but don't know if they are 3.7v), the CigEasy Elegant Easy. And any of these would need that own charger which will put of more mA and is not to be used to charge slim KR8 batteries.
Read about the KR808D-1 threaded Vgo version here
http://www.e-cigarette-forum.com/fo...ger-vgo-650-kit-kr808-little-fat-battery.html

Alternately you can get a more flexible 510-threaded 3.7v model like the Riva 510 kits at Liberty-Flights.com (their kits are 3.7v because they are new stock from the one Riva manufacturer who now makes the 3.7v ones). The Kgos may also me 3.7v. Or get a 3.7v mod. You can use a 510 to 808 adapter to put KR808D-1 cartos on them and can also use 510-threaded stuff on them. With Riva or Kgo or small battery mods, 1.5 ohms may still be pushing the edge a bit. Some recommend large battery mods (like ones that use 18350 or 18650) for 1.5 ohm vaping.

 

[wv2win]

You may have damaged your battery's protection circuits and after that it may start not holding charge as well or may even be dangerous to charge. The dual coil should never have been put on a slim battery. Slim batteries should be using things that are 2.5 to 3 ohms single coils (a 2.5 ohm dual coil won't work either because it's 2 5 ohm coils and works on high voltage mods.)

In general, anything under 2.5 ohms belongs on a fat battery model or mods. And even the mass manufactured fat battery models (Ego etc) are occasionally damaged by 1.5ohms. Some people will only go that low on mods.

If you want something with a big battery and 901 connection (901 connection with work with KR808D-1 cartos only IF the socket provides appropriate airflow for KR808D-1. In general I think the threaded end of the battery to have a slotted post to let air in?). You are also used to using 3.7v so you probably don't want a 3.4v big battery. Ones you can research (as to how well they work with KR808D-1 cartos and what their real voltage is) are the Kanger Vgo version that is KR808D-1 threaded (there is also a 510-threaded version), Igo, the Riva 901's at Liberty-Flights.com (I believe they have a slotted post but don't know if they are 3.7v), the CigEasy Elegant Easy. And any of these would need that own charger which will put of more mA and is not to be used to charge slim KR8 batteries.
Read about the KR808D-1 threaded Vgo version here
http://www.e-cigarette-forum.com/fo...ger-vgo-650-kit-kr808-little-fat-battery.html

Alternately you can get a more flexible 510-threaded 3.7v model like the Riva 510 kits at Liberty-Flights.com (their kits are 3.7v because they are new stock from the one Riva manufacturer who now makes the 3.7v ones). The Kgos may also me 3.7v. Or get a 3.7v mod. You can use a 510 to 808 adapter to put KR808D-1 cartos on them and can also use 510-threaded stuff on them. With Riva or Kgo or small battery mods, 1.5 ohms may still be pushing the edge a bit. Some recommend large battery mods (like ones that use 18350 or 18650) for 1.5 ohm vaping.

Absent as usual from these suggestions are good variable voltage or 5 volt models which tend to have higher mAh batteries that will not only provide warmer vapor and long battery life, but will work well with dual coil cartos. I would suggest you look at the 5 volt GLV2 or the variable wattage Darwin.