Got efests new 2900MAH 35A-actually good!

[conanthewarrior]

Hi people. I bought Efests new battery due to their adamant claims they was genuine 35AMP.

Well, I have been testing them at 150Watt 5-7 seconds, and they are not even getting warm with a 0.3 build.

Have they changed their ways and really working in house?

My samsungs get warm in the 150, these do not.

I am actually impressed with these new batteries, they admitted the 2800MAH were LG re wraps, but said feel free to unwrap as these are really made at our factory, and are really 35 amp.

Well, I know they work well at 30 amps, and that is enough for me. I am going to now use these for my sigelei 75 as it was over drawing the 25R Sometimes.

 

[Lefty]

Did you mean to say the 2500mAh were rewraps? The only 2800mAh LG's I know of are ICR 5A batteries that you have to charge to 4.3v to get the full mAh. I was under the impression the 2800mAh was one of their "made at a Chinese factory for them" batts. Some of these (the 2100mAh) test well. It seems that with the 2800 exploding in a regulated mod fiasco that quality control might be an issue with some of their "in house" cells. I'm glad yours are some of the good ones.

 

[conanthewarrior]

Did you mean to say the 2500mAh were rewraps? The only 2800mAh LG's I know of are ICR 5A batteries that you have to charge to 4.3v to get the full mAh. I was under the impression the 2800mAh was one of their "made at a Chinese factory for them" batts. Some of these (the 2100mAh) test well. It seems that with the 2800 exploding in a regulated mod fiasco that quality control might be an issue with some of their "in house" cells. I'm glad yours are some of the good ones.

I am not too sure, but if you check their facebook they admit the 2800MAH was an LG rewrap, and promise these are real, as rated batteries. I have used them at 30 amps, and they only got slightly warm due to the immense heat from the RDA at 150 watts.

I am unmarrying this pair to go in my sigelei 75, but am so impressed I am buying another set from the same seller and batch.

 

[rolltidevaper]

Just not willing to chance these batteries. We've all seen the "vent" video from a reviewer and then today I saw Grimm's VLOG where he had a couple vent on him. Now, in fairness, Grimm put them in his mod wrong, but they vented immediately. I'll stick with my proven LG's.

 

[Lefty]

I am not too sure, but if you check their facebook they admit the 2800MAH was an LG rewrap, and promise these are real, as rated batteries. I have used them at 30 amps, and they only got slightly warm due to the immense heat from the RDA at 150 watts.

I am unmarrying this pair to go in my sigelei 75, but am so impressed I am buying another set from the same seller and batch.

I went to their facebook page and saw a link to the battery venting posted by someone but didn't see a response. Perhaps they pulled it. Of course I was unable to find an LG cell that remotely resembled the specs for the Efest 2800 so maybe it's just me.

 

[conanthewarrior]

I went to their facebook page and saw a link to the battery venting posted by someone but didn't see a response. Perhaps they pulled it. Of course I was unable to find an LG cell that remotely resembled the specs for the Efest 2800 so maybe it's just me.

Maybe the HG2? Or is that too new? If they were rejects to be re-wrapped, 2800MAH sounds fair ground?

I will try to find their admittance. Maybe they did pull it but they shouldn't of.

 

[conanthewarrior]

https://www.facebook.com/permalink.php?story_fbid=392916287563250&id=239046279616919 .

Sorry, they state one of their batteries IS now a HG2 rewrap, and a good cell, thats why they do it for their new 3000MAH battery. But they then go on to state the only real 35A battery is their new 2800MAH, all the others are not. ( This was before they had made the wrappers, and it is actually now 2900MAH they explained to me. I do not mind if it is 2800MAH, but if it is 30 amp, or even 25, I will be astounded and hope they are making a turnaround, as we need a real, high amperage battery, especially with the temp control mods and such)

Do you know in the flashlight forums Efest are regarded as the best? I had a row over there about them being rewraps, that we settled in the end, with Efests biggest fan and me apologizing.

He did say though, that for him (He is a serious modder, makes torches that will light up about 4 football fields with ease with silly amounts of power being drawn from the batteries) Efest have worked the best, over all other battteries. I found it strange they are regarded the best in one place, and one of the worst in another, that is why I wanted to try them, as I could only find info on Efests that was fairly old, so I though I would give them a chance.

I am glad I did, honestly.

Thing is, the Chinese/English translation has been done by a toddler, or appears so, or someone who was not meant to be part of that department just used google translate lol.

But the second part states they make a genuine 35 Amp cell. And that is only their 2800/now 2900MAH 35A.(They did tell me pre production they was going to be changed to 2900MAH to distinguish them from the older 2800mah)

I used these at 30 Amps yesterday with 7 second pulls (I was not actually pulling, it was burnt wick within a second at 0.2, but I was doing this for me, and also Jon at Lion wholesale).

They was not even getting warm. After about 20 minutes they felt around skin temperature, but all my batteries do due to the RDA getting hot, and the heat travelling along the body.

I really want to see graph results of this. All I know, Is that I am buying another set for my 150, as I am going to 'divorce' lol this pair and use them in my sig 75, as that recommends at least a 25 amp battery, preferably 30 amp.
I am overdrawing the 25R's in certain situations, so I stay out of those situations, but If I either had a VTC or these spare (I only have one set of VTC4's that I have for my 150, but these preferably, 2900 vs 2100Mah, and I think they are that by the time they took to charge to full capacity, maybe only 2800 but if they are anywhere near what they say they are, their new, in house, genuine high amp battery, would it not change things?)

 

[conanthewarrior]

Also, I was using my sig 150 yesterday with them, Still over 90 percent battery. They are working on par with the 25R's, Generally they stay high for a while untill it reads correctly then drops to arounf 80 for a small time, then 70, and so on. (Not these yet though, I have yet to do a full charge-discharge-charge-discharge, I will keep this thread updated with how they last, as Jon explained they are probably not dangerous, but may well have a short lifespan. He was only speculating, and I guess he will run his own tests, it was just I was in the UK and one of the first adopters, so far, I am extremely impresssed.

I would not usually vape at 150 BTW, and the most my25R's in the sig75TC are being over drawn is about 3 amps, but that is 3 too many for me.

EDIT: On trying my device, there is 92% battery, which is a bit higher but around what I would normally expect

 

[conanthewarrior]

I am trying to run these down, as Jon said they are safe, but may fail earlier than they should. He has not yet received a batch yet unfortunately, that is why he asked for my feedback. He will have them very soon though if anyone wants to try them .

If not, I think we could have a real thing here.

 

[Lefty]

I saw the post. I didn't take it as a claim that they were rewrapping them. Just that they were selling them as LG batteries and like many others do with with the HE2 selling the HG2 as 35 amp batteries.The claim was that others may be rewrapping this cell and "our company is the first company to develop the 18650 35Amps continous batteries, and our new 18650 35Amps 2800mAh is only continous current and made by Efest own company." In other words the Efest 2800 is one of their own "in house" cells and that's what vented at 14 amps in a regulated mod. Only the one 2800 vented of the three the guy checked. That leads me to wonder about quality control for Efest's own cells even when some of them perform well.

 

[Jon@LiionWholesale]

I actually think (but I'm not su

I am trying to run these down, as Jon said they are safe, but may fail earlier than they should. He has not yet received a batch yet unfortunately, that is why he asked for my feedback. He will have them very soon though if anyone wants to try them .

If not, I think we could have a real thing here.

Just to clarify I said they are likely safe, I haven't seen the 2900mAh yet. Just based on past Efest experience, their high current ratings are not usually unsafe ratings that cause venting, they're just beyond what the battery can comfortably do so they usually wear out pretty quickly and don't perform very well.

Also I think Efest finally took it too far with the 2800mAh battery, saying it had 80A pulse or something. They had a lot of customer problems from people who believed that rating. The reason for discontinuing that and going to this one was partly to do a more reasonable rating, so I would hope they'll be a little more reasonable.

I did do a lot of testing with the 2800mAh battery and it actually seemed pretty good, but virtually identical to the HG2. I suspect it's either a rewrapped HG2 or a copy of the HG2. The HG2 gets closer to 2800 or 2900 mAh when pushed at higher current levels so maybe that's why they rated it that way. I wouldn't be completely surprised if this is actually the exact same battery with different ratings but Efest is adamant it's different (which doesn't really mean anything).

Efest sells original batteries as well - the HG2 post you're referencing is just them selling original HG2's, not rewrapped.

 

[conanthewarrior]

Ahh sorry mate, I misquoted you. I do have a bad memory due to brain damage, so I apologise for that one.

Ah, that would make sense, here efest state about the LG HG2 and how their 2800(Changed to 2900MAH to distinguish it from the older battery, so not actually sure if they are 2900 or 2800 but new, it was a bit hard with the language barrier, but the 2800 they mention as being true 35A is the 2900MAH, they told me themselves)


Oh my god. I did not realise the old battery made such claims. That is ludicrous, and pulse ratings are milliseconds anyway as I understand, not seconds, so are pretty much irrelevant (someone did tell me a 25 R can take safely 45 Amps for 5 seconds safely, I do not know about that though. I have been keeping to 20 and below. Constant is what we need.

Yes, it was an LG re wrap originally, they admitted in conversation from what I understood, but again the language barrier made it hard, so maybe it was a copy.

Ahh I did not know that about Efest,that they sell original batteries, but the link also included the claim the battery is genuinely 35Amp constant(the 2800, now the 2900MAH at the last minute to distinguish it), and I thought, what If they really have changed, admitted their mistakes, and made a high quality battery?

If I am honest it has impressed me, it does not get hot even at 30 amps, so I feel safe with it.

I will keep an eye on the life during charge/discharge though.

I just can't wait until you get your hands on them and see what you think. I hope you are impressed, and they are 25 or 30 amp, as that would be a dream come true. I know it is highly unlikely, if they turn out to be bad after your testing, they was not expensive, so I won't of lost much for the pair (About £12).

If it is a 2800MAH battery, that Handles 25 Amps safely, they are what I am going to be using in my sig 75, as it says it needs a minimum 25 amp battery. Although I have been using 25 R's and keeping under 20 amps, with temperature control and the voltage jumps, it does overdrive. That is using a calculator that is for adjustable mods, on steam engine. You enter the actual voltage of the batttery, and what the device is Up/down stepping it too, and it tells you. A couple of settings are 23/24 amps, I am a bit weary of that, but do you think a 25R could take that, or would I be better buying another genuine VTC4 and sacrifice a bit of battery?

I am just praying to the vaping gods, they have actually made a battery that can do 25 amps safely. If they have I will be buying more sets, something I never thought possible.

 

[Lefty]

The 35A continuous and 80A pulse are printed on the battery itself. Along with saying it holds 60% of it's original charge after 300 cycles although most cycle claims I've seen by other manufacturers were for how many to get to an 80% figure.

 

[conanthewarrior]

The 35A continuous and 80A pulse are printed on the battery itself. Along with saying it holds 60% of it's original charge after 300 cycles although most cycle claims I've seen by other manufacturers were for how many to get to an 80% figure.

That is insane. I may be wishing too much for a 25 or 30 amps battery, but 80 amps with 35 constant? You surely know it is not really that, like I am not expecting these to be 35Amp ( I could be proved wrong though) but I am hoping for 25 constant.

 

[Lefty]

That is insane. I may be wishing too much for a 25 or 30 amps battery, but 80 amps with 35 constant? You surely know it is not really that, like I am not expecting these to be 35Amp ( I could be proved wrong though) but I am hoping for 25 constant.

Surely I do. I mentioned it in response to you saying you didn't realize they made such claims. At any amperage I'd be leery of having to wonder if this particular cell should have been tossed in the "C" cell bin but wasn't.

 

[NemesisVaper]

The 35A continuous and 80A pulse are printed on the battery itself. Along with saying it holds 60% of it's original charge after 300 cycles although most cycle claims I've seen by other manufacturers were for how many to get to an 80% figure.

LG specify the cycle life for the HE2 and HE4 as greater than or equal to 60% of C(nom) after x cycles. Not sure on Samsung and Sony can't remember. 60% is pretty reasonable but maybe not something we as vapers could tolerate. Sure I'd want to change them before capacity dropped that low. Wed not see that kind of drop off for quite a while due to us not constantly discharging them and our regulated mods having different cutoff voltages.

 

[Lefty]

LG specify the cycle life for the HE2 and HE4 as greater than or equal to 60% of C(nom) after x cycles. Not sure on Samsung and Sony can't remember. 60% is pretty reasonable but maybe not something we as vapers could tolerate. Sure I'd want to change them before capacity dropped that low. Wed not see that kind of drop off for quite a while due to us not constantly discharging them and our regulated mods having different cutoff voltages.

Could well be 60% is standard and I just remembered it as 80%. My short term memory sucks.

 

[conanthewarrior]

Well, they are currently on charge but are now divorced, or will in a few hours. Next Saturday I will order a set to keep married for the 150. These are going in the 75 though.

 

[Haadkoe]

Fwiw:

Bottom Line
In my opinion, this is an average 20A continuous discharge current (CDR) cell that runs extremely hot at 25A. Its capacity is much lower than its rating. Its capacity at 20A down to 3.2V is almost 25% less than the 25R's.


Test Results



Comments

• At 10A the discharge reached a bit under 2000mAh. This is terrible capacity for a 35A-rated cell that's supposed to be 2800mAh. I rate this Efest's capacity as 2300mAh.
• At 20A the cell had a high maximum temperature of 83°C. This is the highest of what I'll accept for a cell running at its CDR, and only because a couple of Samsung's and LG's do the same.
• At 20A down to 3.2V its capacity is about 1050mAh, about 25% less than the 25R.
• At 25A the cell reached a max temperature of 97°C just shy of my 100°C safety cutoff. At 35A this cell would be operating close to a temperature that could cause it to vent. And this is without it being in a closed mod, possibly near a warm 510 connector or another hot cell.
• An additional five cycles at 20A showed no signs of damage.
• I am setting a CDR of 20A for this cell. I think you will get decent cycle life at 20A due to the lack of damage seen at that level. In my opinion you should not run this cell above 20A.
• To see how other batteries have tested and how hard you can safely push them, check out the links in my signature.

 

[Jon@LiionWholesale]

Fwiw:

Clearly he got some defective ones too. This is very odd, maybe they did have a lot of quality control problems and we happened to get all good ones in our testing? Very weird.

 

[bondo]

The part that's eating at me about this whole thing is that the leading,reputable manufacturers(sony,LG,samsung) dump millions yearly into R&D but yet efest(known for misrepresentation) has magically cracked the chemistry composition to create a cell that the others cant.

 

[NemesisVaper]

"Magic" - insert Georgio spreading his hands JPEG.

What kind of whiney bitches are vapers who complain about batt tech. Jeez... your holding a couple ampHours of power in a tiny 18650 that will dump all that in the palm of your hand, or right in front of your face... safely. Be careful what you demand.

I'm reminded of the customer service axiom that says you can have it done right, cheap or fast... you get to choose two.
Batts have a similar relationship. Capacity, performance and form factor. TLOP and chemistry determine that if you want to increase one... you must adjust one or both of the other two. But go ahead and believe that the most (in)famous re-wrapper managed what the big boys couldn't... in secret no less.

I think you may have misunderstood bondo's post. I'm detecting a large amount of sarcasm in his statement about efest, leading me to believe he thinks they're full of bull shit too. That is, if the last part of your post was still refering to his. If not, ignore me.

 

[NemesisVaper]

I am in complete agreement with Bondo's post but without the Meme pic that joke may have flopped.
My humor is frequently quite dry, but it's not often you can blow the dust off it.

The "whiney vapers" dig however, was serious (and not directed at Bondo).

Cool. Very hard sometimes to interpret subtle meaning in text.

 

[conanthewarrior]

Fwiw:

Is this the 2800 MAH though, as thats what it states? I am talking about the newest 2900MAH Batteries (Which are 2800 MAH to cofuse matters further, just they say 2900MAH to distinguish them from the old 2800MAH)

 

[conanthewarrior]

Same shit, different shit. Ultimately, shit.

Probably. I am just dreaming really. After i realise these are shit, I will just go back to the 25R'S as I only got 2 of them to test.

 

[conanthewarrior]

I am under no impression these are actually a 35A cell. I am just hoping for 20 amps, maybe more. But I know that is virtually impossible, to make that clear, as the like of samsung and sony would of already done it if they could.

 

[bondo]

Same shit, different shit. Ultimately, shit.

Describing your posts on VU?

 

[conanthewarrior]

Wow, whats the beef between you two? Slating peoples mums is a bit deep on a battery thread.

 

[Haadkoe]

Describing your posts on VU?

Eat a bag of dicks.

 

[bondo]

Eat a bag of dicks.

A whole bag????

 

[conanthewarrior]

Well, I guess I need to record myself eating an Item of clothing.

It appears they perform very similar to the LGHG2, and someone on here very knowledgeable suspects they ARE the LGHG2.

Now, my only issue is I have the HG2. In a mod, at around 35 watts, at just over half battery, it sags so much when I fire it goes to zero and I get the check battery message, and have to put a 25R in, or one of these. The 25R or Efests work right down to near empty.

So does that mean I likely got a duff HG2 as I only have one? I am not imagining the other batteries working for longer in my devices due to the huge sag they experience, can a duff one get through quality control sometimes? As if they are the HG2, I will buy some more, but if I get another and it has the same sag, I will just buy some more of the Efests for more MAH, 25R's for general use.

Very, very strange indeed. At least I know they are ok for 20 Amps though.

 

[NemesisVaper]

No issues with the pair of HG2 I've got. I can Vape all the way down to 8-10% at 70W on my Sigelei 100W with no problems.

Not a bad battery just not worth the extra money. To get 3000mah you need to discharge them to 2.0V. The HE2/4, 25R and VTC4/5 all have a 2.5V cutoff. That means a lot of the extra capacity is trapped between 2.5V and 2V. In real terms you're lucky if you get an extra 200mAh out if them, maybe less at higher loads.

 

[conanthewarrior]

I am afraid I think my friend was correct in his preliminary tests, and these ARE HG2 Rewraps that were rejects.

No issues with the pair of HG2 I've got. I can Vape all the way down to 8-10% at 70W on my Sigelei 100W with no problems.

Not a bad battery just not worth the extra money. To get 3000mah you need to discharge them to 2.0V. The HE2/4, 25R and VTC4/5 all have a 2.5V cutoff. That means a lot of the extra capacity is trapped between 2.5V and 2V. In real terms you're lucky if you get an extra 200mAh out if them, maybe less at higher loads.

Really? So in reality, they are not 3000MAH, and are closer to the 25R's? That would explain a LOT.

I had been using the Efests in my Sig 75, but I was only using that at a maximum of 40W.

Today I decided to have a bit of fun, but didn't fancy using the 150W.

I used the Sig 75, and the batterys were charged 3-4 days ago. The first battery (Which I have rewrapped, I pulled one wrapper to look for markings underneath, there was none, so if they are LG they have sanded off the logo.

I tried to fire it with a RDA attached, My velocity in one of its 'beast mode' builds. Just 3MM 24 gauge coils (I think, they could be 26 but I am sure because there is around half a second ramp up it is 24, and the amount of turns I can see inside does not look like a 26 gauge build).

It sagged all the way to empty, and said check battery. The first battery would fire at 55 watts, it was one bar lower than full.

I pulled this battery, and put in the battery with its original wrapping. I fired at 75 watts, but the sag was still nearly to zero. If I use my 25R's, they do not sag this bad.

I am going to see how long I can get 70W working with these, but I think the samsung 25R is superior. I guess it was a combination of wishful thinking, believing Efest may of changed their ways, and my brain damage made me think these were better.

They DO perform better than my HG2 in the lower watt range, up to 30 Watts they last a lot longer.

So, I guess these are good for 20 amps, not for long though, and are B or C binned LG HG2's.

The search continues for a genuine, high amp battery.

I hear the 25R's can take a pulse of 45AMP for 5 seconds? Is this true? As I take 4-5 second pulls, always have, and am going nowhere NEAR 45 Amps, the max I can go to is 25, and that is with a 0.1 build in power mode, 0.3 and above the voltage steps up so I am drawing around max 18 Amps.

So, I guess the Samsung 25R's are still the best out there, at the moment, and for the foreseeable future, until a company produces a true ultra high drain cell.

These batteries are fine for normal use though, but for when I want to push the device, a 25R works much better, much less sag, and I usually use the 150W for these kinds of wattages anyway. This is why I had not noticed before.

They are an OK battery, but not a GREAT battery, just a 20 amp cell. Don't know if it is a HG2 100% yet as only preliminary tests have been done, but it seems most likely, or they have made a battery with a VERY similar curve to the LG HG2.

I see nemesis vaper can vape all the way down to 8-10% with these LG HG2 batteries at 75W. I wonder if that is because it is dual batteries, or my LG HG2 should of been a B binned cell that got through.

 

[conanthewarrior]

The answer was 15. It managed 15 full power 5 second hits, before it dropped automatically to 60 Watts. I will see how many it can do before it drops to the next level, which is 50. I will then see how long it can work at 50, then reduce it to 30 untill empty.

 

[NemesisVaper]

I am afraid I think my friend was correct in his preliminary tests, and these ARE HG2 Rewraps that were rejects.


Really? So in reality, they are not 3000MAH, and are closer to the 25R's? That would explain a LOT.

I had been using the Efests in my Sig 75, but I was only using that at a maximum of 40W.

Today I decided to have a bit of fun, but didn't fancy using the 150W.

I used the Sig 75, and the batterys were charged 3-4 days ago. The first battery (Which I have rewrapped, I pulled one wrapper to look for markings underneath, there was none, so if they are LG they have sanded off the logo.

I tried to fire it with a RDA attached, My velocity in one of its 'beast mode' builds. Just 3MM 24 gauge coils (I think, they could be 26 but I am sure because there is around half a second ramp up it is 24, and the amount of turns I can see inside does not look like a 26 gauge build).

It sagged all the way to empty, and said check battery. The first battery would fire at 55 watts, it was one bar lower than full.

I pulled this battery, and put in the battery with its original wrapping. I fired at 75 watts, but the sag was still nearly to zero. If I use my 25R's, they do not sag this bad.

I am going to see how long I can get 70W working with these, but I think the samsung 25R is superior. I guess it was a combination of wishful thinking, believing Efest may of changed their ways, and my brain damage made me think these were better.

They DO perform better than my HG2 in the lower watt range, up to 30 Watts they last a lot longer.

So, I guess these are good for 20 amps, not for long though, and are B or C binned LG HG2's.

The search continues for a genuine, high amp battery.

I hear the 25R's can take a pulse of 45AMP for 5 seconds? Is this true? As I take 4-5 second pulls, always have, and am going nowhere NEAR 45 Amps, the max I can go to is 25, and that is with a 0.1 build in power mode, 0.3 and above the voltage steps up so I am drawing around max 18 Amps.

So, I guess the Samsung 25R's are still the best out there, at the moment, and for the foreseeable future, until a company produces a true ultra high drain cell.

These batteries are fine for normal use though, but for when I want to push the device, a 25R works much better, much less sag, and I usually use the 150W for these kinds of wattages anyway. This is why I had not noticed before.

They are an OK battery, but not a GREAT battery, just a 20 amp cell. Don't know if it is a HG2 100% yet as only preliminary tests have been done, but it seems most likely, or they have made a battery with a VERY similar curve to the LG HG2.

I see nemesis vaper can vape all the way down to 8-10% with these LG HG2 batteries at 75W. I wonder if that is because it is dual batteries, or my LG HG2 should of been a B binned cell that got through.

I'm going to be emailing batterybro.com when I get chance his spec sheet shows 2.0V where as others show 2.5. Jon got over 2800mah at 20A to 2.5V as well so there hay ha e been a change.

Not worth a premium over r 25r in my opinion

 

[conanthewarrior]

I'm going to be emailing batterybro.com when I get chance his spec sheet shows 2.0V where as others show 2.5. Jon got over 2800mah at 20A to 2.5V as well so there hay ha e been a change.

Not worth a premium over r 25r in my opinion

No, because isn't below 2.5V where a cell becomes irreparably damaged? So the extra MAH would be useless unless you wanted to use the battery ONCE?

 

[conanthewarrior]

OIk so it made 15 5 second pulls at 75 Watts, when it dropped to 60 watts it made 14 before dropping to 50 watts, at 50 watts it made 21 5 second pulls, then around 20 or so at 40 W (I lost count) I then dropped to 30, that was only for a few pulls before it couldn't power, I am now down to 20 watts, and have had at least 20 good pulls. I am using 0 Nic for this as I am vaping a hell of a lot more than I would normally. This has taken around 4 hours I guess, as I turned it off when not in use, and went to the town with a different device, I do love the device at lower wattages, but at full power, this battery is awful.

I usually get all day between 20-30 watts, as thats where I have been vaping lately, I do have a very flavoursome tank that works best at around 13-17 watts from my friend in the USA Bondo, called an orchid. It uses dual micro coils at 0.6 ohms. about 7 and a half watts a coil is the sweet spot, produces vapour comparable to a nautilus if you could draw that long, so its not excessive, but with it I get amazing battery life and it doesn't drink juice TOO fast.

I am either going to get a Smok Xcube 2 in a fortnight, or an IPV3 LI as I want one more dual battery mod. I will then have six mods, enough to rotate and keep me happy, and hopefully as I am rotating they will last longer than being used alone. I do have a mech on the way for if I got down to zero regulated mods, but speaking to my GP it is the EGO style they are regulating, box mods should be safe. He had never seen one untll I showed him, he was amazed by it. Crap to know they are going to prescribe one of the crappiest designs to people though if it does end up getting prescribed. I hope they don't, and people can make their own choices in vaping.

 

[NemesisVaper]

No, because isn't below 2.5V where a cell becomes irreparably damaged? So the extra MAH would be useless unless you wanted to use the battery ONCE?

Depends on the cell. Some high capacity cells are designed to charge to 4.35 and some are tested to 2.0V, depends on what the manufacturer specifies. You damage a cell every time you use it. A batterybro.com fail outright if you take voltage very low. I've had a faulty torch drain one to pretty much zero Volts. It took a bit of convincing to get it to charge but worked fine after. Wouldn't recommend it though and might be best to recycle it if that happens.

 

[conanthewarrior]

I used a 25R, in my IPV D2, I have made it to 32 full power 5 second pulls so far. It can still do more, but I have dropped it to 60 as I got bored of testing that high.

Not sure if that makes the IPV superior, or the 25R, or a bit of both lol.

I will try the same with the sig and a 25R tomorrow, it is getting latish now to do testing.

 

[conanthewarrior]

Depends on the cell. Some high capacity cells are designed to charge to 4.35 and some are tested to 2.0V, depends on what the manufacturer specifies. You damage a cell every time you use it. A batterybro.com fail outright if you take voltage very low. I've had a faulty torch drain one to pretty much zero Volts. It took a bit of convincing to get it to charge but worked fine after. Wouldn't recommend it though and might be best to recycle it if that happens.

Ahh, I never knew this. So some batteries are OK down to 2 volts, depending on the manufacturer? Most cells I see are at least 2.5, I wonder why the cut off is at 3.1 Volts in most devices?

 

[conanthewarrior]

Depends on the cell. Some high capacity cells are designed to charge to 4.35 and some are tested to 2.0V, depends on what the manufacturer specifies. You damage a cell every time you use it. A batterybro.com fail outright if you take voltage very low. I've had a faulty torch drain one to pretty much zero Volts. It took a bit of convincing to get it to charge but worked fine after. Wouldn't recommend it though and might be best to recycle it if that happens.

I also meant to ask, you say you damage a cell everytime you use it? How is this so?

 

[NemesisVaper]

A battery is chemical. Every time you use it and charge it, it's wearing out. Tiny amounts of damage on the anode and cathode materials reduces surface area for ions to move to and from.

Mods shut off at a voltage that keeps amp draw under control and to prolong the life of the battery. The sooner you charge the less damage is done. Not that it matters much, batteries are so cheap. I'm not worried about squeezing a few more cycles out of one for 3 quid a pop.

 

[conanthewarrior]

A battery is chemical. Every time you use it and charge it, it's wearing out. Tiny amounts of damage on the anode and cathode materials reduces surface area for ions to move to and from.

Mods shut off at a voltage that keeps amp draw under control and to prolong the life of the battery. The sooner you charge the less damage is done. Not that it matters much, batteries are so cheap. I'm not worried about squeezing a few more cycles out of one for 3 quid a pop.

Ahh I get what you mean now, just general use causes wear on the battery- by the way, Where do you get batteries that cheap? I pay £6 for my 25R's-that is really cheap.

 

[NemesisVaper]

Get all mine from fasttech and Gearbest mate. Genuine and cheap.

 

[conanthewarrior]

Get all mine from fasttech and Gearbest mate. Genuine and cheap.

Ahh, ok I never realised this. I will get some from there then in future, order 4 for the price of 2. They are 100% genuine from fasttech though aren't they? I just worry due to it being China.

 

[NemesisVaper]

Yep, they're 100% genuine cells. Fasttech are a decent retailer. They're up front with everything, they even tell the true capacity on the bullshit 6000mah cells.

 

[Jon@LiionWholesale]

I was the one that did the testing. Preliminary testing shows these to look very similar to HG2's, just like the 2800mAh Efests did. The HG2 is really a 3000mAh cell, but if you run it at high amps it goes down to more like 2800-2900mAh which I think is why Efest said 2800. So I think they're either rewraps or HG2 copies.

I'll run more tests and publish results in a couple weeks.

 

[D Vaping]

I was the one that did the testing. Preliminary testing shows these to look very similar to HG2's, just like the 2800mAh Efests did. The HG2 is really a 3000mAh cell, but if you run it at high amps it goes down to more like 2800-2900mAh which I think is why Efest said 2800. So I think they're either rewraps or HG2 copies.

I'll run more tests and publish results in a couple weeks.

HG2s are cheaper. If they are HG2s why pay the premium?

 

[Barbara E.]

I can tell you why people *pay the premium* for efest batteries. They might not be the absolute *best* battery around but at least they know they're *good* batteries and, more importantly, that they're genuine (because they can check the authentication code).

We've had a rash of stores in my area selling *genuine* VTC4/VTC5/25R/HG2 batteries that were clones. We've had at least one instance of a mod blowing up that I know of. (Mech mod running a 0.5 build - blew the mod's button right off. Also have had several instances of them venting.)

 

[conanthewarrior]

HG2s are cheaper. If they are HG2s why pay the premium?

Because of efests rewrapping and claims of being a battery it not. They claim it is an in house 35 A constant battery, whereas it is a 20 amp LGHG2 rewrap.

Due to this, you pay more, for an inferior battery (Still good batterys, just not good enough to have LG's logo on them-they don't pass QC enough for them to label them as theirs- this could be anything from simply not being 3000MAH and 2900MAH (most likely) to any other issues.