Efest - Red/Silver vs. Purple?

[morebaconplease]

Anyone know if there is a big difference? I see the red/silver ones have 100 more mah in the 18350 and 18500 sizes. I notice no one ever lists the amp ratings for the red/silver, but usually its listed on the purples...and its even printed on them too I think.


Is it that? The amp rating?

What gives?

 

[Vaslovik]

Oh gee, I don't know, I've been using the red 2000 mAh ones for over a year now, the V2's, I have 10 of them that I rotate through my mech, and they are doing a very good job for me still. I'm not sure what the silver or purple ones are about, could be some designer color deal. I'm sure Baditude can tell ya.

 

[p7willm]

Different batteries have different characteristics based on how they are made. There are a lot of different things you can do when building a battery and building for one thing usually means that something else will change. To increase the MAH, Mili Amp Hours or a measure of how much energy the battery can store, you can decrease the Amp rating, how fast you can take the energy out.

For most uses of batteries like ours you want a slow discharge of a lot of energy over hours. We, with a low ohm coil on a mechanical or a high wattage on a regulated, want to get energy out fast and are willing to sacrifice quantity for speed.

Nobody makes batteries for vaping. All our batteries are made for some other application and just used for vaping. I don't thing any manufacturer will recommend that their battery be used for vaping. We are a small group but we are growing and in the future some manufacturer might make batteries with us in mind.

The normal red/silver Efests are main stream batteries with a discharge rate around 10 amps and the purple ones can handle around 30 amps.

If you know what the battery is for you can get a battery that will suit the use. There is no point putting a purple Efest in a Provari since it will never try to get over 10 amps, but a mechanical mod with a low Ohm coil will certainly be beyond the 10 amps of the red/silver.

 

[laidback4sho]

i've had my 35A purples for about 6 months now and they haven't given me a bit of trouble. never tried the red/silver though.

 

[Baditude]

Anyone know if there is a big difference? I see the red/silver ones have 100 more mah in the 18350 and 18500 sizes. I notice no one ever lists the amp ratings for the red/silver, but usually its listed on the purples...and its even printed on them too I think.

Is it that? The amp rating?

What gives?

The black and gold Efests are protected ICR batteries (not for use in e-cigs).
The red and silver Efests are IMR.
The purple batteries are IMR/hybrid.


Efest IMR

18650 2250mAh 10Amp
18650 2000mAh 10A
18650 1600mAh 30A
18490 1100mah 8.8A
18350 800mah 6.4A
purple 18650 2500mAh 35A* (rebranded LG18650HE2 2500mAh 20 amp*)
purple 18650 2100mAh 30A (rebranded Sony 18650VTC4 2100mAh 30A)
purple 18500 1000mAh 15A
purple 18350 700mAh 10.5A

Please be aware that Efest over-rates the specs of their batteries. The German independent testing lab Dampfakkus found the following results:

The purple 18650 3100mAh 20 amp battery is a re-wrapped Panasonic 18650BE 3100mAh with only 6 amps continuous

The purple 18650 2500mAh 35 amp battery is a re-wrapped LG18650HE2 cell with only 20 amps continuous

The purple 18650 2100mAh 30 amp battery is the same cell as the Sony 18650VTC4 2100 mAh 30 amp continuous

Efest a rewrapped Sony (same cell used)

Battery Basics for Mods: IMR or Protected ICR?

 

[morebaconplease]

Thanks All, and especially Baditude! Excellent info - you rock!

 

[windxrunner]

i've had my 35A purples for about 6 months now and they haven't given me a bit of trouble. never tried the red/silver though.

you know the whole "the purple 35a ones are actually 20a" thing? i've been trying to get some solid data on these as i'm considering buying some. how far have you pushed them? do you feel that they are advertised correctly?

 

[Rickajho]

you know the whole "the purple 35a ones are actually 20a" thing? i've been trying to get some solid data on these as i'm considering buying some. how far have you pushed them? do you feel that they are advertised correctly?

No they aren't. They are a solid 20 amp battery - maybe - but under testing performance falls off markedly when you try to draw even 30 amps from them.

http://lygte-info.dk/review/batteries2012/Efest IMR18650 2500mAh (Purple) 2014 UK.html

 

[windxrunner]

so it's just a maybe? like maybe they aren't what they say they are or maybe they are decent at 20a?

 

[Froth]

so it's just a maybe? like maybe they aren't what they say they are or maybe they are decent at 20a?

They're more than decent under 20A, they're pretty damn awesome so long as you stay under 20A on them.

 

[Halcyon2501]

Efest IMR
purple 18350 700mAh 10.5A

Is there any info on these being re-wraps like the 18650s? I use them, and I run them at around 8.5 of their listed 10.5 amp rating. I haven't had any issue with them so far, but I don't want to push my luck...

 

[Wraith504]

Personally i dont buy them because of the marketing ploy of listing a pulse rating as a continuous discharge rating. ill stick to vtcs.

 

[windxrunner]

the Efest and LG batteries have different specs, though...

 

[Vaslovik]

See, I told you Baditude would know

 

[Baditude]

the Efest and LG batteries have different specs, though...

How so?

Because Efest puts 35 amps on the shrinkwrap? Efest is deceptively using the "pulse" amp rating, which is an arbitrary number to begin with. Every manufacturer or reseller has a different definition of what pulse rating is, so its ridiculous to compare battery pulse ratings from one manufacturer to another because its not a set industry standard.

The "continuous discharge rate" is an industry standard and can be used to compare batteries from different manufacturers. Pulse ratings are always higher than continuous discharge ratings. Efest apparently is using the pulse rating to make their batteries appear they are better than other manufacturers' batteries to encourage sales. This is a deceptive sales practice.

Dampfakkus is a German independent testing lab who exposed that Efest rewraps batteries from other manufacturers. That's not such a big deal because many batteries today are rewrapped batteries. However, what is important is Efest over-rates the specs of the original cell they are using, which depending upon how the battery is to be used could be dangerous to consumers.

Efest 3100 mah 20 amp battery is a rewrapped Panasonic battery with only 6 amps continuous.

Efest 2500 mah 35 amp battery is a rewrapped LG battery with only 20 amps continuous.

The LG battery is an excellent battery. The purple "35 amp" battery is the same cell, so its an excellent battery. However, its not really a 35 amp battery, its a 20 amp battery. This would be extremely important to know if you were doing sub-ohm builds on an RBA, not so important if using this model for other applications.

The 3100mah 20 amp purple Efest is a rewrapped Panasonic NCR18650BE battery rated for only 4 - 6 amps continuous. This would be a dangerous battery to use if used for sub-ohm builds in an RBA. It would be a mediocre battery at best if used for other applications.

 

[Baditude]

Is there any info on these being re-wraps like the 18650s? I use them, and I run them at around 8.5 of their listed 10.5 amp rating. I haven't had any issue with them so far, but I don't want to push my luck...

There is no current info that they are indeed re-wraps of another battery, but initial independent tests show that its a good battery given the limitations of an 18350 battery. Dampfakkus has not tested this battery, but at least one flashlight enthusiast has bench tested this battery.

 

[crxess]

Personally i don't buy them because of the marketing ploy of listing a pulse rating as a continuous discharge rating. ill stick to vtcs.

Which does no one any good if they run anything other than 18650 batteries

As to Efest 18350's - While I do not have a Lab, I do have a decent Meter and can build some consistent coils.
I have tested the Efest Purple 10.5a against the Red strictly for performance and it is very noticeable.
Black Copper Stingray
Black Omega Dual Coiled @ 5.6ohm on cotton
Blueberry Custard @ 1mg nic

While the RED runs it fine and not chain vaping allows for decent vapor/flavor and usage.............
the PURPLE is Instantly Noticeable:
Ramp up is almost instantaneous.
Vape is much warmer.
Flavor is Deeper/Richer/Brighter
Vapor is Thicker by near double at 3 second draws
Battery recovery is better
Vape time is 20%+ longer

Efest, as a Company, needs to be more responsible. Still, As a Consumer, it you learn and purchase accordingly you can Enjoy using Efest batteries in relative safety.

Know your intended Application and shop accordingly.

Edit: Please note, this was only a test. I do not rely on Red Efest Batteries below .8ohms and normally run them in Mods running Kayfuns at 1.4-1.6ohm.

 

[fati]

I got 4 of the 30A ones, didnt know I had 3 sony vtc4 lol . They are doing fine except one of them got cell damage in some way I guess. Well its started some day when the nightcore gived no reading at all, so I put it aside until I do some voltage testing on it, but I doubt that Ill use it again, my teeths are much more valueable than a high drain battery.

edit: I buyed theses because I was going to vacancy and needed some new battery fast, witch where the only descent availlable, they are doing there job, but I dont expect to buy again from that compagny..

 

[ModBox]

For .9 or 1ohm coils should I go for the red/silver efest then instead of the purple as I don't need the higher amp limit?