Efast batteries

[Reyray]

So guess what's y'all thinking on efast when I first stated everybody I talked to was like no those are the devil but its been awile and I got some that have performed okay I mean they last me a day or two what do y'all think. I got them in a trade but I check with the decode and they checked out okay

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[b.m.]

It's not that they won't work.They are usually not rated at what they say they are.Several people have found that the ones that claim to be 30 amp are actually only 10-20 amp batteries that have been relabeled.

 

[oplholik]

I agree with B.M. If you are gonna use em, don't trust em for anything over what a 20 amp batt will handle safely.

 

[IMFire3605]

Agree with above posters. With Efest, being bin B and C batteries from battery makers such as Sony, LG, Samsung, and Panasonic, best to take what the rating printed on the label and divide it in half as it's true CDR rating. The 30amp labelled ones are 10 to 12amp true CDR, the 35 and 38amp labelled Efest batteries are in actual truth only 20amp CDR. Nothing wrong with the batteries for basic usage like tootle puffing, its when you start actually stressing them they can be fickle. DJSLab, a reviewer from Portugal on YTube, recently in the past couple months had a pair of newer Efest batches that though they were labelled at 35 and 38amp CDR, once they were pushed up toward 14amps they started to vent to equalize pressure internally, he even had one literally explode, and this was only a couple months ago, with Pegasus1337 (Pegasus vaping Academy) on YTube doing a follow-up to DJSLab's warning video, trying to figure out what actual cell was under the label.

I've used the first batches of Efest Purples when they first came out, though then they were B and C bin cast offs of Sony VTC4 cells, they held up well 20amp and below, started going toward 25amp CDR mods would get really hot, 30amp CDR, couldn't get more than 3 maybe 4 pulls before had to set the mod aside disassembled to cool back down. Nothing wrong with them for usage if you use your head and know they are not A Bin rated cells to begin with, and don't push them to their limits or to the limits of what is printed on them, way to many mishaps in the last 18months with these over specified B and C bin cast off re-wrapped cells, especially Vamped and Efest; IMRen, AWT, Subohm Cell, and several others appear to be buying higher grade B Bin cells batches from Sony, Samsung, and LG and seem to handle better and more fairly. Still, I personally suggest stick with who actually makes the actual cell. For the price of one Efest purple you can get two of the actual name brand A Bin cells, ie example, one Efest 35amp supposed, might be an LG HE2 under the wrapper, $14USD for the Efest just a single one, same or about $15USD you can get 2 actual Authentic LG HE2 A Spec Bin batteries.

 

[edyle]

So guess what's y'all thinking on efast when I first stated everybody I talked to was like no those are the devil but its been awile and I got some that have performed okay I mean they last me a day or two what do y'all think. I got them in a trade but I check with the decode and they checked out okay

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most of my batts are efest; I vape at 10 watts; 20 for the most;
if I want to try higher than that i'd rather plug into the wall anyway.

 

[Reyray]

Thanks guys I've been camping at .5 ohms and at 50 wats and they handle it I guess I mean my rda gets hot but not the battery ( I check them very often as I'm scared to have one go off)

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[Rocketpunk]

There's a bit of distrust in efest batteries. To be honest, they're all I've used for the past year and a half. I have the 2500 and 2900 mah cells. They say 35 amp limit, but I'm pretty sure the consensus is around 20 to 25. I will say that everybody I personally, physically know uses these, and outside of the rare instances of user error, there have been zero mishaps, ventings, or problems. Some of my friends build a little low (.18/.2 ohms) and nothing has exploded. Fortunately my friends know what they're doing, and accidents could happen, but all in all, I've no issues with them at all.

The whole re-wrapped thingy... I'm not as knowledgeable about battery manufacturers in China as others may be here, but I'm pretty sure there's only so many manufacturers, and there are more re-wrapped cells out there on the market other than just efest. But the hate for them exists here on the forum for some reason, so I'm sure you'll get all sorts of opinions.

EDIT: I use Atlantis V1s and the Freemax Starre tanks with .5 ohm coils. I've used .4 and .3 ohm coils, but I prefer .5 ohms. I use a couple of mechs and an IPV3. Everything has worked perfectly fine. I've noticed a little extra heat with the .3 ohm coils but nothing beyond that.

 

[Robert Cromwell]

I use some 18500 efests. However I do not go over 15 watts with them....
I use them because I got them for a bit under $1 each

I just got 4 HG2 18650's in the mail today for about $7 each. 3000 mah and a solid 20 amp battery.

 

[IMFire3605]

Thanks guys I've been camping at .5 ohms and at 50 wats and they handle it I guess I mean my rda gets hot but not the battery ( I check them very often as I'm scared to have one go off)

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As long as you are using your head knowing the risks and not to test them higher than what the actual manufacturer rates their own cells you should be fine.

 

[petrotech]

I agree with what everyone else said....I just pretend they're 10 amp batteries and go on my way.

 

[Robert Cromwell]

As long as you are using your head knowing the risks and not to test them higher than what the actual manufacturer rates their own cells you should be fine.

yeah but with re-wrapped batteries how do you know what the actual manufacturers specs are? As far as I know all Efests are re-wraps.

 

[Reyray]

Okay well I checked on my toolbox app and at 50w its only at 10 amps so I guess thats safe right

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[IMFire3605]

yeah but with re-wrapped batteries how do you know what the actual manufacturers specs are? As far as I know all Efests are re-wraps.

Sometimes it is hard to narrow down what actual cell is underneath if no manufacturing codes are on the metal of the cell underneath, but other times taking the wrapper off and finding a coding printed underneath on the metal of the cell can direct you to finding out what cell it actually is. It is a crap shoot either way, so a lot of times you have to jump to educated guesses and low ball the estimate, as I posted above the 30amp Efest coming out recently could be anything from Panasonic NCR18650B to a Samsung 30Q, a range of 8amps max CDR to 15amps CDR, where the 35 and 38amp Efest could be a Sony VTC4 to an LG HG2 to a Samsung 25R or even an LG HE2/HE4, pattern there is most of those are 20amp CDR for the A Bin Name Brand Cell, so assume you have a 20amp Efest not a 35amp. An "Experienced" vaper, generally this is not a problem, my problem is a new user coming into a B&M shop, buying a mod, hearing the clerk say yeah get the highest amp battery you can and you will be good, we got LG HE2 20amps, but for a little more we also have these Efest 38amps, you'll be good to go, hook, line, sinker, 2 months later, that new user is in the hospital due to negligence on both the user's fault for not doing more research, and that of the B&M for misleading the new user.

I'll always stand by statement of leave Efest and other re-wraps alone and by authentic cell from authentic manufacturers at authorized resellers you take that crap shoot out of the equation and lower the risk to just near nill all together and it saves you money in the long run.

 

[serene.in.dallas]

Efest is a horrible company that completely disregards consumer safety. They rewrap other companies B grade batteries then inflate the ratings on them. Absolutely horrible business and I will never own one. They are also more expensive when buying them online which makes absolutely no sense. If you want to see real testing and graphing of them check out Mooch over in the battery subforum or Pegasus on youtube. Their business practices are revolting and make my stomach turn, same with any other rewrapping companies that inflates their specs just to sell them, they will never get a cent of my money.

 

[Reyray]

Sometimes it is hard to narrow down what actual cell is underneath if no manufacturing codes are on the metal of the cell underneath, but other times taking the wrapper off and finding a coding printed underneath on the metal of the cell can direct you to finding out what cell it actually is. It is a crap shoot either way, so a lot of times you have to jump to educated guesses and low ball the estimate, as I posted above the 30amp Efest coming out recently could be anything from Panasonic NCR18650B to a Samsung 30Q, a range of 8amps max CDR to 15amps CDR, where the 35 and 38amp Efest could be a Sony VTC4 to an LG HG2 to a Samsung 25R or even an LG HE2/HE4, pattern there is most of those are 20amp CDR for the A Bin Name Brand Cell, so assume you have a 20amp Efest not a 35amp. An "Experienced" vaper, generally this is not a problem, my problem is a new user coming into a B&M shop, buying a mod, hearing the clerk say yeah get the highest amp battery you can and you will be good, we got LG HE2 20amps, but for a little more we also have these Efest 38amps, you'll be good to go, hook, line, sinker, 2 months later, that new user is in the hospital due to negligence on both the user's fault for not doing more research, and that of the B&M for misleading the new user.

I'll always stand by statement of leave Efest and other re-wraps alone and by authentic cell from authentic manufacturers at authorized resellers you take that crap shoot out of the equation and lower the risk to just near nill all together and it saves you money in the long run.

True I got a lg battery from my b&m and asked him about the efest and he said they are not the best but if used right and not stressed then I should be good. I trust this B&M as I have used them for a few months

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[serene.in.dallas]

Agree with above posters. With Efest, being bin B and C batteries from battery makers such as Sony, LG, Samsung, and Panasonic, best to take what the rating printed on the label and divide it in half as it's true CDR rating. The 30amp labelled ones are 10 to 12amp true CDR, the 35 and 38amp labelled Efest batteries are in actual truth only 20amp CDR. Nothing wrong with the batteries for basic usage like tootle puffing, its when you start actually stressing them they can be fickle. DJSLab, a reviewer from Portugal on YTube, recently in the past couple months had a pair of newer Efest batches that though they were labelled at 35 and 38amp CDR, once they were pushed up toward 14amps they started to vent to equalize pressure internally, he even had one literally explode, and this was only a couple months ago, with Pegasus1337 (Pegasus Vaping Academy) on YTube doing a follow-up to DJSLab's warning video, trying to figure out what actual cell was under the label.

I've used the first batches of Efest Purples when they first came out, though then they were B and C bin cast offs of Sony VTC4 cells, they held up well 20amp and below, started going toward 25amp CDR mods would get really hot, 30amp CDR, couldn't get more than 3 maybe 4 pulls before had to set the mod aside disassembled to cool back down. Nothing wrong with them for usage if you use your head and know they are not A Bin rated cells to begin with, and don't push them to their limits or to the limits of what is printed on them, way to many mishaps in the last 18months with these over specified B and C bin cast off re-wrapped cells, especially Vamped and Efest; IMRen, AWT, Subohm Cell, and several others appear to be buying higher grade B Bin cells batches from Sony, Samsung, and LG and seem to handle better and more fairly. Still, I personally suggest stick with who actually makes the actual cell. For the price of one Efest purple you can get two of the actual name brand A Bin cells, ie example, one Efest 35amp supposed, might be an LG HE2 under the wrapper, $14USD for the Efest just a single one, same or about $15USD you can get 2 actual Authentic LG HE2 A Spec Bin batteries.

This guy knows exactly what hes talking about. Kudos to you sir for being well informed.

 

[serene.in.dallas]

But the hate for them exists here on the forum for some reason, so I'm sure you'll get all sorts of opinions.

I will bash on efest and other rewrappers every chance I get. The main problem I have with them is their ratings. If an uniformed user just goes by whats printed on the wrapper he can be in for a serious world of hurt. They knowingly and intentionally mislabel batteries so they can sell more, all at the uninformed consumers risk. Their just greedy companies with no regard to consumers safety. Absolutely despicable and vile business practices.

 

[Rizzyking]

Just buy the originals and often pay less for a far better battery and cut out the efest middleman. Only ever had one battery vent on me and it was an efest back when I had a zmax v5 never touched them since but know a couple of people who were sold them with mech mods at lousy b&m's that vented as well. Majority of people might well be fine but why take the chance when you can get the genuine battery's for less.

 

[Rocketpunk]

I will bash on efest and other rewrappers every chance I get. The main problem I have with them is their ratings. If an uniformed user just goes by whats printed on the wrapper he can be in for a serious world of hurt. They knowingly and intentionally mislabel batteries so they can sell more, all at the uninformed consumers risk. Their just greedy companies with no regard to consumers safety. Absolutely despicable and vile business practices.

I think more than just efest batteries get rewrapped. But I feel ya.

It might take a newbie wrapping a .15 ohm coil (beginner's luck? chance?) using an efest to vent a cell, or at least make it really hot, especially if it's in a mech. But how many newbies do you know who go about wrapping a .15 ohm coil right off the bat? If it's one of their buddies who hands it off and something goes bad, is it the battery's fault or the user's?

Hopefully in this day and age of regulated devices (even regulated devices don't provide 100% safety), this shouldn't be too much of an issue. A year ago, yeah, with mechs, maybe.

Blame the Chinese company all you want, I doubt it'll make any difference. Sort of like guns, though. Know what you're doing and using and you can have one hell of a fun time. Don't know what you're handling or don't respect it, if you blow you're own head off... is it the bullet's fault or the person holding the gun?

 

[Karen Powell]

What about "IMREN" BATTERIES? Where is a good online seller for name brand batteries?