Efest Test Results

Ok, one of my 30A batteries went kaput, and now I'm left with one last Sony VTC4. It's time for me to get a new set of batteries for my dripper. I'd like to ask your opinions as to which to get...but here's some criteria.

First, Sony is ruled out. There are too many fakes out there, and even an honest vendor can get duped. Since I will use a 20A build on it, I want to make sure they're rated at what they say they are. So no Sony's, even though I know they're good batteries, I dont want to take the risk.

Second, IT has to be 30A or better CONTINUOUS. It has to be explicitly stated that it has a continuous discharge rate of 30A or higher. Pulse ratings do not count.

third, 2000 mAh or higher.


I am thinking of going with MXJO 2500 mAh 35a continuous... But I don't know their track record.

Another option is the Efest 35a 2800 mAh batteries.

Any other advice would be welcome. Sources to buy would be nice as well.

Thank you in advance.  

So I have (2) 3100mAh Efest batteries rated @ 20A and (1) 2500mAh Efest batterie rated @ 35A. I'm experiencing a pretty annoying problem with all 3 of them and that is they aren't lasting nearly as long as I feel they should be. I can EASILY vape through a battery in less than one hour while heavy vaping. I'm aware that I am sub-ohming and that requires more power from the battery but these are just going way too fast and something isn't right. I have a BEC Pro mod that takes a single 18650 battery and I'm vaping an Aspire Atlantis tank @ 35 watts with the .5 ohm coil installed. I charge each battery fully with a Nitecore i2 before using them and it'll say 4.2V on my mod & on my Smart BEC app it will say 100% as I take my first few puffs but then starts draining at a ridiculous rate until they are dead. I am not aware what the mod efficiency is on my BEC Pro or if there might be something not working properly within my device. Can someone please help me find what's wrong with these? Maybe some of you have eperienced this problem with Efest batteries in the past? Thanks in advance!

Edit: These are genuine Efest batteries as I bought them straight from the manufacture on Ebay.  

Hi folks,

I recently purchases a Sigelei 100w box, and got the purple Efest batteries that the vendor recommended.
I'm using this with a KangerTech Subtank Mini.
It's currently set to 42W - 5.0V, and the resistance it shows me is 0.6 ohms.

I have some questions about my setup.

- I read some reports that these batteries have different specs than what is reported, and it could potentially be dangerous. What should I do to be safe? Is there a max W/V that I can set it to?
- I have a TrustFire TR-001 charger (output: 4.2V / 500Ma). Can I charge those batteries with that? I read the charger supports 18650 batteries, but I'd rather be sure...
- If the charger is no good, any recommendations of what I should be using?

Thanks a lot!  

Efest IMR 18650 LiMn 2800mAh Battery - Flat Top - 35 Amp

They claim to be 35a continuous & 80 pulse. . .
Has anyone tried these?
if they really live up to the specs these will be the best batteries on the market now since no other battery can claim a 35a continuous rating. Not to mention 2800mah? Dang. Just note these are not the same batteries from before. The previous ones had a 35 amp pulse rating  

According to this link that Nick Green posted to Facebook, Sony is apparently stating officially that they are no longer making VTC4 and VTC5 batteries...

Sony's official response to the availability of VTC4 and VTC5
18650s  

I'm charging a purple EFEST IMR battery in an XTAR LI-ION battery charger and I wanted to make sure Efest IMR purple is actually covered under LI-ION charging.. I can upload pictures in a second but I've been charging the battery for about an hour and this is my first electrical mod so I am trying to make sure, thank you. It says it is for rechargeable Li-ion batteries only but so far the battery is not hot or any problems  

I bought my Sigelei 100w Plus a few days back and ordered 2 Sony VTC4's on my same order (I'm confident they're legitimate, I've bought some before) to be able to marry them together and use them with my Sigelei. Upon receiving the batteries, I labelled one A, and one B and put them into my charger at the same time (charger was off, put both in and turned it on), one battery is slightly more charged than the other (it's 2/3 bars, while the other is still 1/3). I'm a bit worried about using married batteries, I understand rotating A and B in my Sigelei and charger but will they be the same charge when they're done? They're new batteries and they both went on at the same time yet one of them is charging a little bit faster.

When both of the batteries are fully charged, will they be safe to use and cycle accordingly? I heard about if one battery has even a tiny bit less, the batteries will take an uneven load and it will make it risky. How do I ensure that these batteries remain married?  

Hey guys, I just ordered an Efest LUC BLU6 and I can't for the life of my find where the app is for Android! Is the Bluetooth app still working for the charger? If not, I wanna refund it quickly before it ships. Thanks guys!  

So, I know that the Sony VTC batteries were the like "Go-to" battery. But they are being faked a lot and are hard to come by some authentic ones.

So whats the next best option?

I have a few different batteries and I definitely can tell the difference in the quality of the hit, and the life of the battery.

I have a red IMR 2000 mAh 18650 and it hits the worst out of all of my batteries.

Then I have a blue samsung battery (Can't really read the writing) but I can see it says 25r on it. This one hits decent.

Then I have a green 2600 mAh battery. Its a beast. Hits like a champ and lasts long. I would like to find a similar battery to this one. Im guessing this is the Sony VTC 5.

I really want to find something that is just as good as the Green one.

Does anyone know where to find these or a similar battery that is 2600mAh 30 amp? If so, are there any deals going on online where I could get a good price? Id like to order some new batteries.

Thanks for the help all!


Edit. One more question. Anyone know the difference between the Amps on each of the batteries? Just from guessing id say the red is 20 amps, blue is 25, and the green is 30? Does that sound right?  

I am interested in setting up an Arduino charger for my vape batteries. But the charger I want to use, an Adafruit bq24074 solar charger, does not support nominal 3.6V batteries. And basically all the Mooch approved batteries are nominal 3.6V. So, which 3.7V batteries are considered fairly robust for high current, vaping purposes?