Efest 18650 Batteries not Lasting!!

[ImaStarreVap3r]

Not a Chance.
Now, barring them being fake and maybe they are not. The 3100 is likely a 6a battery rewrapped. The others are 20a batteries and not the best.

LG HE2 or Samsung 25R (INR18650-25R)

Now, what do you consider heavy vaping? Blowing non-stop clouds?
I Vape around .5ohm all the time and at home almost constantly have my mods in hand. Still, I get 3-5hrs. on a 2200mah battery.

The seller I bought them from is defiantly from the manufacture so not sure why you are saying "not a chance." They have sold over 5,000 of them and they have nearly 100% positive feedback and even have an alibaba page where you can buy them whole sale STRAIGHT from Efest. I have moved past Efest batteries now though because I've seen alot of people say they don't last as long as other batteries that have the same mAh. Btw I can't use either of those batteries because it won't support a .2 ohm coil at 75 watts which is where I will be vaping it.

 

[crxess]

Sony VTC4 if you can find authentic s - 30A

 

[philoshop]

Quite honestly, I don't even buy flashlight batteries through ebay or amazon. It's not worth the risk, just to save a coupla' bucks.

 

[cope]

you do know efest does not make batterys. they sell rewrapped ones...my 2100mah 30a batts are actually sony vtc4's..
im using a sigelei mini 30 with a atlantis at 20w chain vapin and i burn 2 batts a day no problem...
my new favorite is the samsung inr 18650 2500mah 25 a

 

[Asbestos4004]

".2 ohm" and "long lasting battery" have never gone together in the same sentence. As far as not believing these folks when they try to steer you away from possible junk salesmen on ebay, well, thats on you. I'd personally take their word for it.

 

[Bunnykiller]

I wonder if you got some of those "flour" filled batteries.... there is a video on youtube showing some one disecting a battery and it turns out it was an ego battery inside and the case was filled with "flour" to make up the weight difference.....

 

[Underwhelmed]

OP started another battery thread, guess the replies here weren't to his liking.

 

[ImaStarreVap3r]

Sony VTC4 if you can find authentic s - 30A

Alright thank you, what ever happened to VCT5s?

 

[RCHagy74]

Battery blogs:

http://www.e-cigarette-forum.com/fo...17-purple-efest-batteries-not-advertised.html

http://www.e-cigarette-forum.com/fo...eeper-understanding-mod-batteries-part-i.html

http://www.e-cigarette-forum.com/fo...eper-understanding-mod-batteries-part-ii.html

Thank you Baditude!

 

[edyle]

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.

vaping at 35 watts on 2500 mAh batteries.

2500 mAh @ 3.7 volts = 9.25 watthours.
9.25 watthours / 35watts = 0.26 hours.

According to the numbers you should get about 15 minutes continuous runtime.
So chain vaping two 7 second puffs per minute will last you for an hour.

 

[ImaStarreVap3r]

vaping at 35 watts on 2500 mAh batteries.

2500 mAh @ 3.7 volts = 9.25 watthours.
9.25 watthours / 35watts = 0.26 hours.

According to the numbers you should get about 15 minutes continuous runtime.
So chain vaping two 7 second puffs per minute will last you for an hour.

Yes I've done the calculation as well and it even matches up somewhat but trust me, these are running out wayyy too quickly. I've read a lot of posts about the Efest batteries in general and came to the conclusion that the batteries are not the mAh and amp rating that they say they are. The 2500mAh battery is actually a Samsung HE2 or HE4 re-wrapped and re-rated to make it look better than it is. There's even 2500mAh batteries out there that last way longer than this Efest one.

 

[Racehorse]

Just get your batts at RTD vapor, they have the sony's, Randy does not have ANY counterfeit batts.

I don't think they sell samsungs, look elsewhere to the other sites people gave you here.

Your other possibility is maybe think about moving to a dual-battery mod.

 

[Frenchfry1942]

With all the clones, copies and deceptions in the vaping industry, someone accepting used batteries and reselling them wouldn't surprise me. Sounds negative, but...

 

[ImaStarreVap3r]

Just get your batts at RTD vapor, they have the sony's, Randy does not have ANY counterfeit batts.

I don't think they sell samsungs, look elsewhere to the other sites people gave you here.

Your other possibility is maybe think about moving to a dual-battery mod.

Yeah I'm afraid that's the direction I will be moving in because even if I do get a VCT4 then yes, it will work up to about 80 watts with my cylinder mod but the battery life will be extremely short. I'm looking at the 150 watt Sigelei, do you have any other suggestions for a better box mod? Not necessarily higher wattage but maybe one that has a better mod efficiency or something like that?

 

[ImaStarreVap3r]

With all the clones, copies and deceptions in the vaping industry, someone accepting used batteries and reselling them wouldn't surprise me. Sounds negative, but...

Right but I would be buying from someone who sells hundreds if not thousands of them so they wouldn't be used.

 

[TheRac25]

efest are just rewraps so you either have bad/damaged/fakes or your expectations are too high

 

[crxess]

Yes I've done the calculation as well and it even matches up somewhat but trust me, these are running out wayyy too quickly. I've read a lot of posts about the Efest batteries in general and came to the conclusion that the batteries are not the mAh and amp rating that they say they are. The 2500mAh battery is actually a Samsung HE2 or HE4 re-wrapped and re-rated to make it look better than it is. There's even 2500mAh batteries out there that last way longer than this Efest one.

Do you have any Idea what you are discussing?
First - ALL Efest are re-wrapped batteries. Same with many many brands. The quality question comes in as What battery is e-wrapped.
Second - Samsung does not make HE batteries
Samsung is INR18650-25R
LG is HE2/HE4
All three Batteries are high quality 18650 2500mah 20a

Three threads on Batteries not and you are still arguing down people that have the experience.
Why ask is you are unwilling to learn?

If you are having High Drain issues, beyond your calculations, you might have an issue in the Mod itself.

Is there even an efficiency rating available for the board in your BEC?

 

[ImaStarreVap3r]

Do you have any Idea what you are discussing?
First - ALL Efest are re-wrapped batteries. Same with many many brands. The quality question comes in as What battery is e-wrapped.
Second - Samsung does not make HE batteries
Samsung is INR18650-25R
LG is HE2/HE4
All three Batteries are high quality 18650 2500mah 20a

Three threads on Batteries not and you are still arguing down people that have the experience.
Why ask is you are unwilling to learn?

If you are having High Drain issues, beyond your calculations, you might have an issue in the Mod itself.

Is there even an efficiency rating available for the board in your BEC?

This thread is from yesterday, my more recent threat is from today and I have thanked you for helping me out on that one. I have done a TON of research from yesterday to tonight on 18650 batteries and I have a much better understanding of all them and which ones are the best, what ratings or true and false, and alot of other stuff. I meant to say LG when I said Samsung. I have come to the conclusion that I need to buy a box mod so I won't be posting anymore battery threads. I'm defiantly here to learn or else I wouldn't have made an account or posted these threads. I greatly appreciate ECF Veterans like yourself that take the time and help out people like me.

 

[crxess]

Dual 18650 will do wonders for your Vape time and handle power better.

I'm still concerned your BEC may be over drawing.

 

[ImaStarreVap3r]

Dual 18650 will do wonders for your Vape time and handle power better.

I'm still concerned your BEC may be over drawing.

Yes, me too. I tried looking up what the efficiency is for it and I couldn't find anything so I'm guessing its something wrong with my device specifically and not just the efficiency of the BEC Pro mod in general. I'll contact FastTech which is where I bought it from and use my warranty to exchange it for a new one or I might just return it all together. Anyway, do you agree that the 150 watt Sigelei is a good choice?