Anyone have issues with efest batts?

[scott63]

Just wondering if anyone has had any issues with an efest imp vibrating or making any sound while in a mech mod?

Mine has just started vibrating slightly once or twice, removed it just in case but was wondering if anyone has had a similar issue?

 

[joecil]

Nope never had that problem with them and I have the red ones as wells as the purple in 18350, 18500, and 18650.

 

[scott63]

hmmm, just tried two separate efest imp 18650's and two aw imp 18350's and all four are making the same sound/vibration.

I haven't used any of them in about a month but think it would be strange if all four had gone back while not in use at the same time.

Starting to think maybe its just a sound i have never noticed before.

Anyone else who could offer any advice would be much appreciated.

Cheers.

 

[NicksCloud]

I notice that many vendors offer this brand but I feel more comfortable using a major brand like Panasonic.

Sent from my HTC One

 

[KY_Rob]

I've tried a couple if Efest 18650's, and both were subpar when compared to AW imo. I won't used them again.

 

[abpigdoc]

I use them, never vibrated, but I bought 2 on eBay. 18650 3400 mAh, and got red hot. I put them in a cabinet so I don't use them again. I should have known better 'cause I'd been on the efest website and knew what they made!

 

[KenD]

I have red and purple 18350s and have never had any problems with them. For 18650s I use other brands (Sony, Samsung, Panasonic, LG).

Sent from my GT-I9100 using Tapatalk

 

[shiddyshad]

I wouldn't trust efest batteries ever. Efest doesn't actually make any batteries themselves, so you never know what you're actually getting. All their batteries are just other brands' that have been rewrapped.

 

[Newportlocal]

Nope. I only use Sony VTC5 18650s and AW 18350s. I know on my mech I have to thread it down enough for the batteries to be firm inside. Perhaps one of your battery connections moved a little so your battery has some play inside the tube.

 

[ScottChensoda]

Firstly, they are IMR batteries Scott, not IMP.

By trying different makes and types of battery, it suggests that the fault lies with the mod itself.

Normally any sign of battery rattle is associated with either the end cap not being fully tightened or else a weakening of the spring in the end cap. All I can suggest is to remove the spring and stretch it a tad to see if that helps.

 

[DaveP]

I wouldn't trust efest batteries ever. Efest doesn't actually make any batteries themselves, so you never know what you're actually getting. All their batteries are just other brands' that have been rewrapped.

I have 2 black and silver Efest 2000mah batts and 2 purple 2500mah Efest batts that are months old. I also have 4 AW 18650s that are over 2 years old. The Efest are good batteries, but the purple ones that are marked with 35A aren't 35 amps continuous, it's a 35A momentary pulse rating. Still, they work fine, but I'm a 2.x amp vaper who usually doesn't go over 10 watts. My newer Efest batteries are about as good as the two year old AW's. I get about the same vaping time from all of them.

AW is a good battery brand, but they don't make the cells in their batteries, either. They buy the cells in quantity from Panasonic, test them all and retain the best product for their own brand. The best ones get the AW wrap and the rest get wholesaled back to other battery companies. Many of them end up in rechargeable electric razors and other products. At least that's what Candlepower forum guys say.

Here's an ECF thread about AW.
http://www.e-cigarette-forum.com/forum/new-members-forum/530522-aw-imr-batteries.html

 

[Baditude]

I'm personally not a fan of Efest batteries or the company. They have a notorious history of deceptively over-rating their battery specs.

As stated before, many of their batteries are re-wrapped batteries from other manufacturers. That's all fine and good (AW does the same), but then they advertise the batteries as having much better specs than the original cell. This is very deceptive to customers and could be dangerous depending upon how the batteries are used.

The purple Efest 3100 mah 20 amp battery uses a rewrapped Panasonic NCR18650BE cell which only has a 4 - 6 amp continuous discharge rating.

The purple Efest 2500 mah 35 amp battery uses a rewrapped LG18650HE2 cell which only has a 20 amp continuous discharge rating.

 

[DaveP]

I'm personally not a fan of Efest batteries or the company. They have a notorious history of over-rating their battery specs.

As states before, many of their batteries are re-wrapped batteries from other manufacturers. That's all fine and good (AW does the same), but then they advertise the batteries as having much better specs than the original cell. This is very deceptive to customers and could be dangerous depending upon how the batteries are used.

The purple Efest 3100 mah 20 amp battery uses a rewrapped Panasonic NCR18650BE cell which only has a 4 - 6 amp continuous discharge rating.

The purple Efest 2500 mah 35 amp battery uses a rewrapped LG18650HE2 cell which only has a 20 amp continuous discharge rating.

I agree. For those of us who vape protected 3.5A and 4A devices it's not really an issue. We are looking for price, vape time, and longevity. It's critical that high amp mech users watch what they push to higher levels.

 

[WattWick]

Never had any battery vibrate.

Battery re-wrapping is essentially the name of the game. There aren't that many factories that produce IMR cells. As mentioned, AW is just a wrapper as well. By that logic, there are no 14500, 18350 or 18500 batteries suited for vaping.

However bad a reputation Efest may have; Their red 18350s are pretty crappy. Their purple 18350s and 18500s are decent-to-good. Not that I would push any limits to see if their discharge ratings hold true. If you're that kind of guy you should be using 18650s for such purposes anyways... and should get something with more trustable specs.

 

[DaveP]

I bought some red AW 18350's (800mah) with the thought that I'd use them in my Sigelei Zmax to make it more compact for away from home use. They work fine, but only last a couple or three hours, compared to the all day vape time I get out of the 18650s.

 

[WattWick]

I bought some red AW 18350's (800mah) with the thought that I'd use them in my Sigelei Zmax to make it more compact for away from home use. They work fine, but only last a couple or three hours, compared to the all day vape time I get out of the 18650s.

Problem with the reds is the voltage drop. Makes for a very very short charge cycles in mechanical mods. Probably a tad better in a regulated mod.

Not that I have done any scientific testing. I can use purple Efest 18350s alongside AW 18350s without any noticeable difference. I don't count my puffs or clock my vaping, tho. I just swap batteries when need be. I honestly can't tell the difference. I can tell the difference with the red Efests, tho. More anemic vape, considerably shorter charge cycles.

 

[DaveP]

Problem with the reds is the voltage drop. Makes for a very very short charge cycles in mechanical mods. Probably a tad better in a regulated mod.

Not that I have done any scientific testing. I can use purple Efest 18350s alongside AW 18350s without any noticeable difference. I don't count my puffs or clock my vaping, tho. I just swap batteries when need be. I honestly can't tell the difference. I can tell the difference with the red Efests, tho. More anemic vape, considerably shorter charge cycles.

Yeah, there's not enough difference to write home about. Vaping frequency, settings, and whatever can skew the numbers somewhat. The only way to properly test them would be to put a resistive load like a 6 volt lamp on them and compare times to reach 3.2v (cutoff on most mods).

 

[RaceGun59]

hmmm, just tried two separate efest imp 18650's and two aw imp 18350's and all four are making the same sound/vibration.

I haven't used any of them in about a month but think it would be strange if all four had gone back while not in use at the same time.

Starting to think maybe its just a sound i have never noticed before.

Anyone else who could offer any advice would be much appreciated.

Cheers.

Are you hearing a "vibrating sound" or feeling a vibration in the body of you mod? Your mod a true mechanical with no electronics what so ever inside? You know that some mods with certain electronic boards have the "rattlesnake sound". using two different brand of batteries would lead one to believe the issue is with the mod, not the batteries.

 

[Froth]

I wouldn't trust efest batteries ever. Efest doesn't actually make any batteries themselves, so you never know what you're actually getting. All their batteries are just other brands' that have been rewrapped.

I'd hate to break it to you, but not even the "mighty" AW makes their own batteries in house. AW, Efest, and many more MAJOR battery sellers DO NOT manufacture them in house, they ALL get cells that have been outsourced by an actual battery manufacturer and were produced elsewhere, sometimes these cells are made to their own specifications. Many companies like AW and Sony test the cells they get in before committing to purchase a large lot of them from the manufacturer.

Not using an Efest because they re-wrap other batteries is a pretty meaningless statement to me, based off that logic you would also not buy AW batteries because they get a whole bunch of battery cells made by someone who isn't them and then put their own wrapper on it after testing.

The only thing Efest has done is skip one important step, they're not having anyone make or design a battery for them...they are taking already established batteries and putting their wrap on those...why? Because then they don't need to be tested because they're already out in the world, less cost, less labor, more profit.

 

[Baditude]

The only thing Efest has done is skip one important step, they're not having anyone make or design a battery for them...they are taking already established batteries and putting their wrap on those...why? Because then they don't need to be tested because they're already out in the world, less cost, less labor, more profit.

As I said before, I don't have a problem with a company who re-wraps batteries. What I have a problem with is when the company exaggerates the battery spec or outright lies about the specs as being much better than the original cell. That's dishonest, disreputable, and could be dangerous to the customer. See post #12 above.

How would you like buying a battery advertised as being a 20 amp battery and it only being 8 amps continuous?

How would you like buying a battery advertised as being 35 amps and it only being 20 amps continuous?