3400 mah Efest 18650 Question

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Patchy

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Feb 27, 2014
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Toronto
Hi guys,

I picked up this battery when I saw it in a vape shop not doing my research prior.
IMAG0114.jpg

I'm finding comflicting information throughout the forum saying the amp limit gets higher/lower the higher the mah rating depending on each persons opinion. I'm hoping to try some sub ohm builds but don't want to try anything the battery can't handle. I read on an site that the max amp draw is 6.8 amps meaning the lowest ohm I can go is 0.6 but I can already do that on my 18350's is this corrrect?
Any help would be appreciated.

Patchy.
 

inanitydefined

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DO NOT DO IT!!!!!!!!!!! that battery is an ICR, and isn't even really safe in a regulated mod, let alone subohming in a mechanical. if you have an 18650 flashlight, use it for that. otherwise take it back or pitch it.

The only batteries I will subohm on is sony vtc4. I hear also good things about the mnke orange batteries and AW 1600. I personally will not touch efest or EH batteries. My teeth are worth the extra buck or two per battery

But seriously, throw that garbage out. And do a little reading. if you honestly think running the battery up to its theoretical amp limit is remotely a good idea, you aren't ready for subohm

edit: oh hey, welcome to ecf. Sorry if i'm a little harsh on you, but you need to know what you are talking about is extremely dangerous, and if you blow your teeth out, it'll ruin it for the rest of us as well
 
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inanitydefined

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Ok I'll look into the sony batteries thanks for the reply. The owner of the vape shop had one in his mod so I automatically assumed it would be Ok but I guess not. Again I appreciate the response.

to be frank with you, I wouldn't go back there, or listen to a word they say. That battery should not be in a vape shop, it is only "safe" in a non regulated mod that will see 1.5ohm or above. basically its only good as a glorified ego. And safe definitely belongs in quotes.

edit: being new to subohm, I would make sure your batteries are good for at least 20amp and are safe chemistry. That means 18650s only. And don't make your first coil subohm. get a few builds under your belt before you start dropping
 
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Patchy

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Feb 27, 2014
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Toronto
yeah they have a lot of supplies and kickass juice but maybe not the most informed. I'm running an Efest IMR 18350 800mAh 3.7V Rechargeable LiMn High Drain battery- Flat top with a 1.6 ohm coil is it safe to use this setup? and yeah I'm not even going to use this battery then even though it was $15...

oh and thanks for the welcome haha I prefer people to be direct anyways
 
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inanitydefined

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Hi guys,
I read on an site that the max amp draw is 6.8 amps meaning the lowest ohm I can go is 0.6 but I can already do that on my 18350's is this corrrect?
Any help would be appreciated.

Patchy.

I don't know what 18350s you have but it doesn't matter. No. the only 18350 safe to that amp are aw high drain, and that's running them up to the ragged edge. Again, if you think that's a good idea, you should just buy a vv and some panansonic hybrids, and stay far far away from subohm

edit: that efest 18350 will be safe for a 1.6 ohm coil. it will even be safe going down to 1 ohm, but pushing it past there is looking for trouble. Anyone got a link to Baditude's battery safety guide? This dude had a battery vent on him back in the day, luckily survived without major scarring, and now goes around preaching battery safety. His knowledge on the matter is among the best in this forum and hopefully he shows up here.
 
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inanitydefined

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Would you advise I use IMR batteries in my evic rather than the samsung ICR that came with it or the 3400mah panasonic that they sell as an upgrade? I know its something people debate, just looking for input.

I would consider 10 amp batteries to be a must in a regulated. Boosting voltage to nearly twice the battery (from 3.7 to 6) takes a lot of current. Assuming a perfectly efficient regulator (which is a pipe dream) I would consider twice the devices amp limit to be a minimum. The other thing good about safe chemistry batteries is they don't vent as violently.
one of these Orbtronic High Drain 18650 2900mAh NCR18650PD Hybrid Li-ion (each) vents in your mod, you're left holding a hot, expensive piece of pipe with some melty bits inside. An ICR vents in your mod, and you'll be lucky to have fingers left to hold it
 
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joshneedham

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Feb 21, 2014
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NCR? I'm not familiar with that kind of battery, is it protected? I don't really know much about batteries, hence sticking with what joyetech provides and recommends for the evic, and an AW IMR 18350 which had many recommendations for use in the evic with the short tube. Looking at the stats on that site, as long as its appropriate to use in my evic, I think I'll be ordering a pair.
I would consider 10 amp batteries to be a minimum in a regulated. Boosting voltage to nearly twice the battery (from 3.7 to 6) takes a lot of current. Assuming a perfectly efficient regulator (which is a pipe dream) I would consider twice the amp limit to be a minimum. The other thing good about safe chemistry batteries is they don't vent as violently.
one of these Orbtronic High Drain 18650 2900mAh NCR18650PD Hybrid Li-ion (each) vents in your mod, you're left holding a hot, expensive piece of pipe with some melty bits inside. An ICR vents in your mod, and you'll be lucky to have fingers left to hold it
 

Baditude

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Would you advise I use IMR batteries in my evic rather than the samsung ICR that came with it or the 3400mah panasonic that they sell as an upgrade? I know its something people debate, just looking for input.
I recommend using only high drain batteries in regulated mods. Regulated mods use buck boost circuitry and PWM (pulse width modulation) to create higher voltages from 3.7 volt batteries. This requires using high drain batteries. ICR batteries have a high mAh rating, but have low drain output and low amp output, insufficient for ultimate performance in a regulated mod. Why High Drain Batteries?

The Panasonic NCR18650A 3100mAh and NCR18650B 3400mAh batteries are hybrid batteries with their chemistry heavily weighted to the ICR end of the fence. They are not considered high drain, have a high resistance, and only have a 6.8 amp limit - not the ideal battery to use in high drain applications such as regulated mods, mechanical mods using a Kick, or any mod using an RBA. These batteries are best reserved for low drain flashlights.

BATTERY BASICS FOR MODS: IMR OR PROTECTED ICR?

DEEPER UNDERSTANDING OF MOD BATTERIES
 

joshneedham

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Feb 21, 2014
14
6
Chicago, IL
Thanks for the helpful links! :)
I recommend using only high drain batteries in regulated mods. Regulated mods use buck boost circuitry and PWM (pulse width modulation) to create higher voltages from 3.7 volt batteries. This requires using high drain batteries. ICR batteries have a high mAh rating, but have low drain output and low amp output, insufficient for ultimate performance in a regulated mod. Why High Drain Batteries?

The Panasonic NCR18650A 3100mAh and NCR18650B 3400mAh batteries are hybrid batteries with their chemistry heavily weighted to the ICR end of the fence. They are not considered high drain, have a high resistance, and only have a 6.8 amp limit - not the ideal battery to use in high drain applications such as regulated mods, mechanical mods using a Kick, or any mod using an RBA. These batteries are best reserved for low drain flashlights.

BATTERY BASICS FOR MODS: IMR OR PROTECTED ICR?

DEEPER UNDERSTANDING OF MOD BATTERIES
 

inanitydefined

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NCR? I'm not familiar with that kind of battery, is it protected? I don't really know much about batteries, hence sticking with what joyetech provides and recommends for the evic, and an AW IMR 18350 which had many recommendations for use in the evic with the short tube. Looking at the stats on that site, as long as its appropriate to use in my evic, I think I'll be ordering a pair.

NCR is the family name, just the way Panasonic does things. Those batteries are a hybrid technology using aspects of IMR (less violent venting and high amp draw) and ICR (high capacity). Batteries and chargers included in kits with Chinese mods are almost always junk.


I recommend using only high drain batteries in regulated mods. Regulated mods use buck boost circuitry and PWM (pulse width modulation) to create higher voltages from 3.7 volt batteries. This requires using high drain batteries. ICR batteries have a high mAh rating, but have low drain output and low amp output, insufficient for ultimate performance in a regulated mod. Why High Drain Batteries?

The Panasonic NCR18650A 3100mAh and NCR18650B 3400mAh batteries are hybrid batteries with their chemistry heavily weighted to the ICR end of the fence. They are not considered high drain, have a high resistance, and only have a 6.8 amp limit - not the ideal battery to use in high drain applications such as regulated mods, mechanical mods using a Kick, or any mod using an RBA. These batteries are best reserved for low drain flashlights.

BATTERY BASICS FOR MODS: IMR OR PROTECTED ICR?

DEEPER UNDERSTANDING OF MOD BATTERIES

I was hoping you'd show
 

Baditude

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NCR? I'm not familiar with that kind of battery, is it protected? I don't really know much about batteries, hence sticking with what joyetech provides and recommends for the evic, and an AW IMR 18350 which had many recommendations for use in the evic with the short tube. Looking at the stats on that site, as long as its appropriate to use in my evic, I think I'll be ordering a pair.

NCR is a newer "hybrid" chemistry, which is a mix of the cobalt-based ICR Li-ion protected batteries and the IMR safe-chemistry high-drain batteries which have Manganese (Li-Mn) and Nickle added for safer chemistry. These batteries are made by Panasonic, leaders in newer battery technology. Orbtronics uses the same Panasonic cells and rewraps them as their own brand (a common and accepted practice in the battery trade).

NCR hybrid batteries are available both as protected and unprotected. In regulated mods you want to use unprotected because VV/VW mods have their own protective circuitry.
 
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ethermion

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Jan 23, 2014
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Would you advise I use IMR batteries in my evic rather than the samsung ICR that came with it or the 3400mah panasonic that they sell as an upgrade? I know its something people debate, just looking for input.

I have been rotating 4 Panasonic NCR18650Bs in my eVic for months, without any battery problems. They last longer than the pink Samsungs, and have had two full days on a single charge. They eliminate battery charge anxiety for me.
 

rucni

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i am slightly worried now. my local shop also sold me the same efest 3400mah 18650 batteries and i have been using them in my vamo v3 and v4. nothing special for a topper just PT3 2.0ohm DC. but i am planning on getting a kayfun clone soon and dropping to at least 1.4ohm coils. should i also consider newer safer batteries??
 

inanitydefined

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i am slightly worried now. my local shop also sold me the same efest 3400mah 18650 batteries and i have been using them in my vamo v3 and v4. nothing special for a topper just PT3 2.0ohm DC. but i am planning on getting a kayfun clone soon and dropping to at least 1.4ohm coils. should i also consider newer safer batteries??
more than likely nothing will happen. but why take the risk? Oh, and I'd build that kayfun to 2.4 if you will be using it on the vamo.That way you can max out the watts without hitting the amp limit
 
Hi guys,

I picked up this battery when I saw it in a vape shop not doing my research prior.
View attachment 310226

I'm finding comflicting information throughout the forum saying the amp limit gets higher/lower the higher the mah rating depending on each persons opinion. I'm hoping to try some sub ohm builds but don't want to try anything the battery can't handle. I read on an site that the max amp draw is 6.8 amps meaning the lowest ohm I can go is 0.6 but I can already do that on my 18350's is this corrrect?
Any help would be appreciated.

Patchy.


try the new Efest 35amp batteries! They're the purple ones...
 

rucni

Senior Member
ECF Veteran
more than likely nothing will happen. but why take the risk? Oh, and I'd build that kayfun to 2.4 if you will be using it on the vamo.That way you can max out the watts without hitting the amp limit

thanks for the advice. i am going to try twisting some 32gauge kanthal together when i get the kayfun to make coils. saw the Rip Tripper video the other day and it seems like the only thing to do with it til i use it up. i failed making PT coils out of it.
 
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