LR Atties and Cartos on eGo??

Status
Not open for further replies.

YetiHunter

Full Member
May 26, 2011
66
20
Chicagoland
Let me put it in Layman's terms: remember the Nintendo Power Glove? "Now you're playing with power".
Yeah, the power glove sucked. Two minutes in, and you're back to you're max pad with the turbo buttons,
but the tv's all busted because you threw the power glove into the tube.

Playing with power only leads to one thing ------> Broken shtuff.
 

Traver

Ultra Member
Supporting Member
ECF Veteran
Oct 28, 2010
1,822
662
WV
But, if there really is an increased risk of fire or explosion, perhaps I've just been lucky and should start shopping around for a good 3.7v mod small enough yet sturdy enough to lug around the jobsite.
In a situations of small risk but high consequences it's usually something that happens to the other guy.
 

DaveP

PV Master & Musician
ECF Veteran
May 22, 2010
16,733
42,645
Central GA
The MOSFET switches in the ego batteries can't withstand the pull of juice that the low resistance atty's/carto's need to properly fire. Also, LR throws a lot of heat which will also damage the switch. Yes, they work but not to their full potential. For LR to truly work properly, a simple 3.7V box mod would surfice. Then you'll know what LR is really like.

The MOSFET is the device that takes all the current through the circuit. The switch you push to vape only supplies a gate voltage to turn on the MOSFET. It's the MOSFET that takes the abuse of low resistance coils.

I have two 650mah eGo batts that are a year and 3 months old and they are doing just fine with Boge 2.0 ohm cartos. I also use a 1000mah Ego batt for those with no problems. My Riva batts, even though they are 750mah batts, die more quickly from LR cartos, simply because they start out at 3.7v and draw more current until the voltage reaches about 3.2v and then they flash. The eGo regulates the voltage to 3.4v throughout the vape by using a pulsed voltage, and that limits the current compared a direct 3.7v battery. The MOSFET is likely to be the failure point, since it is the driver chip that switches the voltage to the coil.

If you do the math, 2 ohms at 3.4v is just under 6 watts. The MOSFET is rated at 4.2 to 5.3 amps depending on ambient temperature. Full wattage (approaching failure) would theoretically be 17 watts and it would take a .6 ohms load to get there. Still, one eGo batt may go for a year and the next one could die in 3 months, due to QC in the manufacturing process.
 
Last edited:

mynameisrob

Ultra Member
ECF Veteran
Verified Member
Oct 7, 2011
1,696
477
PH-Illadelph-IA, PA
Just because someone has used 1.5-1.7ohm attys/cartos on an eGo with no problems doesnt mean its okay. I have a few friends that have used lower reistances on their eGos and never had a single problem, but I also know quite a few people that have fryed their mosfet and killed their eGo, and a few have killed more than one . Using 1.5-1.7ohms def does put a lot of stress on the eGo mosfet. What it really does is give you very little room for error. I think YetiHunter made a really good point. Unfortunately, their are slight variations in production. A carto that seems to work fine on one persons eGo, could fry anothers instantly. Regardless, using real low ohms, and especially 1.5ohm attys/cartos pushes the amp limit that the eGo was designed for. So yes, an eGo user could use 1.5-1.7ohms on an eGo and might not have a problem, but that doesnt mean its okay to do and you should do it. So for any eGo users that want to use 1.5-1.7oms, go right ahead. Just know that your walking a very fine line, and especially with 1.5ohms. If thats all you use, just know that sooner or later you prob will fry one bc of it. And remember, with pretty much all cartos, theres a +/- .2 possible variation in the stated ohm, and also an atty/carto can drop slightly in ohm with use. Thats why if you really feel the need to use 1.5ohms, I would use a multimeter and always check them. If a carto you think is 1.5ohms is actually running at around 1.3ohm you def are really risking frying it. Using a multimeter would at least give you a chance to catch a carto that would have possibly delivered the death blow. One of my good friends who I always tell not to use 1.5ohm cartos on his eGo, and he always tells me that its crap and using them is not a problem at all, just fryed his eGo using a 1.7ohm Ressurector. He used the same carto for almost a month and I check it with my multimeter and it was actually running at about 1.55ohms.
 

DaveP

PV Master & Musician
ECF Veteran
May 22, 2010
16,733
42,645
Central GA
I don't understand this, wouldn't the battery use more watts and current with an LR carto anyway?

A pulsed DC voltage train limits the on time of the battery voltage. It would be similar to you pressing a button repeatedly to keep a light blinking instead of holding down the button to light it up all the time. The pulse width and the duration of the pulses translates to less current (and wattage) being delivered to the load (atty coil).

A Riva battery is a direct connect device that delivers the full battery voltage to the atty. That's why you experience a warmer vape from a fully charged Riva batt. The Ego delivers a 3.4v regulated voltage to the atty pretty much until the battery is almost dead. You experience a change in taste and vapor right before the battery blinks.
 
Last edited:

DaveP

PV Master & Musician
ECF Veteran
May 22, 2010
16,733
42,645
Central GA
Just because someone has used 1.5-1.7ohm attys/cartos on an eGo with no problems doesnt mean its okay. I have a few friends that have used lower reistances on their eGos and never had a single problem, but I also know quite a few people that have fryed their mosfet and killed their eGo, and a few have killed more than one . Using 1.5-1.7ohms def does put a lot of stress on the eGo mosfet. What it really does is give you very little room for error. I think YetiHunter made a really good point. Unfortunately, their are slight variations in production. A carto that seems to work fine on one persons eGo, could fry anothers instantly. Regardless, using real low ohms, and especially 1.5ohm attys/cartos pushes the amp limit that the eGo was designed for. So yes, an eGo user could use 1.5-1.7ohms on an eGo and might not have a problem, but that doesnt mean its okay to do and you should do it. So for any eGo users that want to use 1.5-1.7oms, go right ahead. Just know that your walking a very fine line, and especially with 1.5ohms. If thats all you use, just know that sooner or later you prob will fry one bc of it. And remember, with pretty much all cartos, theres a +/- .2 possible variation in the stated ohm, and also an atty/carto can drop slightly in ohm with use. Thats why if you really feel the need to use 1.5ohms, I would use a multimeter and always check them. If a carto you think is 1.5ohms is actually running at around 1.3ohm you def are really risking frying it. Using a multimeter would at least give you a chance to catch a carto that would have possibly delivered the death blow. One of my good friends who I always tell not to use 1.5ohm cartos on his eGo, and he always tells me that its crap and using them is not a problem at all, just fryed his eGo using a 1.7ohm Ressurector. He used the same carto for almost a month and I check it with my multimeter and it was actually running at about 1.55ohms.

While I agree in theory with what you say, in practice people have varying lengths of battery life anyway. Some of this is due to batteries actually dieing prematurely and in other cases the MOSFET takes a dive. I wouldn't recommend dual coil attys on an eGo battery, but 2.0 ohm cartos and attys will last just fine for most people at 6 watts. a 2.5 ohm standard atty at 3.4v produces 4.6 watts and a 2.0 ohm atty produces 5.8 watts. A 1.5 ohm atty will get you up to almost 8 watts and that's half the maximum load for the MOSFET. I'd shy away from the 1.5 dual coils, especially, even though they work fine. The jury is still out from the suppliers. Most don't recommend dual coils for Ego, although some do.
 

Traver

Ultra Member
Supporting Member
ECF Veteran
Oct 28, 2010
1,822
662
WV
A pulsed DC voltage train limits the on time of the battery voltage. It would be similar to you pressing a button repeatedly to keep a light blinking instead of holding down the button to light it up all the time. The pulse length and the time between pulses translates to less current (and wattage) being delivered to the load (atty coil).

A Riva battery is a direct connect device that delivers the full battery voltage to the atty. That's why you experience a warmer vape from a fully charged Riva batt. The Ego delivers a 3.4v regulated voltage to the atty pretty much until the battery is almost dead. You experience a change in taste and vapor right before the battery blinks.

I understand that an eGo has a regulated voltage and for the same carto would deliver less current. I think I just misinterpreted what you were saying. Anyway thanks for the explanation. Do you by any chance know what the C rating is for an eGo?
 

DaveP

PV Master & Musician
ECF Veteran
May 22, 2010
16,733
42,645
Central GA
Do eGo-T batteries differ from eGo batteries in regards to this discussion???

-AJ

Same basic battery, but with a 5 click on-off feature. These were introduced with the tank system, so I guess the -T was added with the set and to differentiate between the two ... just my thoughts.
 

Big Screen D

Ultra Member
ECF Veteran
Verified Member
Aug 5, 2011
2,292
2,830
Georgia
FWIW. My wife has used 1.5 ohm dual coil carto's on her rotation of 6 510 280mah batteries for months now.

Only recently has she began using a couple of my hand me downs 1100mah eGo's that have both the 5 click shut off and a lcd screen that shows the remaining charge and hit counter. The protection circuit on these trip at 1.5 ohm, making the use of EDCMC's impossible. Good thing she's in love with LED lighted Visions on these. She loves the bling!

Of note, the eGo batteries I referenced are not regulated, and come off the charger at 3.7v. Same carto's that will not fire on these, work just fine on 900mah's.
 

tj99959

ECF Guru
ECF Veteran
  • Aug 13, 2011
    15,111
    39,567
    utah
    Just because someone has used 1.5-1.7ohm attys/cartos on an eGo with no problems doesnt mean its okay. I have a few friends that have used lower reistances on their eGos and never had a single problem, but I also know quite a few people that have fryed their mosfet and killed their eGo, and a few have killed more than one . Using 1.5-1.7ohms def does put a lot of stress on the eGo mosfet. What it really does is give you very little room for error. I think YetiHunter made a really good point. Unfortunately, their are slight variations in production. A carto that seems to work fine on one persons eGo, could fry anothers instantly. Regardless, using real low ohms, and especially 1.5ohm attys/cartos pushes the amp limit that the eGo was designed for. So yes, an eGo user could use 1.5-1.7ohms on an eGo and might not have a problem, but that doesnt mean its okay to do and you should do it. So for any eGo users that want to use 1.5-1.7oms, go right ahead. Just know that your walking a very fine line, and especially with 1.5ohms. If thats all you use, just know that sooner or later you prob will fry one bc of it. And remember, with pretty much all cartos, theres a +/- .2 possible variation in the stated ohm, and also an atty/carto can drop slightly in ohm with use. Thats why if you really feel the need to use 1.5ohms, I would use a multimeter and always check them. If a carto you think is 1.5ohms is actually running at around 1.3ohm you def are really risking frying it. Using a multimeter would at least give you a chance to catch a carto that would have possibly delivered the death blow. One of my good friends who I always tell not to use 1.5ohm cartos on his eGo, and he always tells me that its crap and using them is not a problem at all, just fryed his eGo using a 1.7ohm Ressurector. He used the same carto for almost a month and I check it with my multimeter and it was actually running at about 1.55ohms.

    An eGo-T LR atty is 1.7ohms, the 510-T LR atty is only 1.5ohms, so obviously Joyetech thinks it's OK to use those resistances on their batteries.
    I think I'll go by what the manufacturer says is OK.
     
    Last edited:

    Cyatis

    Ultra Member
    ECF Veteran
    Verified Member
    Mar 8, 2011
    1,080
    2,099
    59
    Stratford, Wisconsin
    I have used 1.7-2.0 ohm attachments, attys and cartomizers, on 900 mah ego batteries for over 6 months. They do drain them faster than standard resistance batteries. They tend to have one last, you know the battery needs a charge vape in them, I could predict pretty accurately when they were just going to die. I agree its probably harder on the batteries than running standard resistance on them. However, that being said, the LR attys and cartomizers just perform so much better on a small battery, that the risk was worth it to me.

    Today I vape with a vv tube mod, at standard resistance (3.0 ohm). Depending on the juice, I vape at close to 9 watts, some flavors taste better at higher settings than others which just don't like it as much.

    Ego batteries normally put out about 3.2-3.3v for me, and you can only go so low with low resistance. For me, it just wasn't enough. I tried some Kgo batteries for awhile, and it was better, but to be perfectly honest, I really like the setup I have now more.

    I can say that I like my VV, better than a 5v mod, as its just easier to change the voltage, with a reasonably consistent cartomizer or atomizer for me, than it was to vary the resistance on them for different juices, YMMV.
     

    DaveP

    PV Master & Musician
    ECF Veteran
    May 22, 2010
    16,733
    42,645
    Central GA
    I understand that an eGo has a regulated voltage and for the same carto would deliver less current. I think I just misinterpreted what you were saying. Anyway thanks for the explanation. Do you by any chance know what the C rating is for an eGo?

    This link shows an eGo battery disassembled. It's said to be an LiCO3 battery and is said to be able to deliver up to 2 amps current. People are repairing them by soldering in a new replacement battery.
    eGo with 10440 battery mod - Vapers Forum
     

    Big Screen D

    Ultra Member
    ECF Veteran
    Verified Member
    Aug 5, 2011
    2,292
    2,830
    Georgia
    The is enough anecdotal evidence to indicate that using LR on eGo's increases risk of premature battery death.

    Question is, how concerned are you about killing a $13-$20 battery? We have 6 510 mega's, and 4 eGo's in the house, and I primarily use an IPro. So if one dies, it's not the end of the world. The spousal unit likes her stick batteries and the vape from LR carto's. Considering I'm not buying a carton of analogs every other day, I consider the reduced battery lifespan risk insignificant.

    On the other hand, if one has only a couple batteries, and funds are tight, then it's of more concern.
     
    Status
    Not open for further replies.

    Users who are viewing this thread