Efest 4544 IMR 21700 35A battery

[LechuckThePirate]

Hi guys, I've checked in Mooch's list of checked batteries but I can't find this one.

Is there any review somewhere or anyone is using them? Are they really 35A?

Cheers!

 

[Rossum]

 

[Baditude]

Pass the popcorn this way. @Mooch

 

[Robin Becker]

Would be very surprised if yes. The INR21700-30T has 3000 mAh and is around 35A and the INR21700-40T has 30A with around 3500 mAh according to Mooch...so with all the respect to Chinese manufacturer, they can not even come closer to the big four (Samsung, LG, Sony and Panasonic (Sanyo)) with their batteries.
If I understand it correctly we talk about the same battery like the iJoy 21700. According to Mooch Tests we talk about 24A CDR and not close to Efest 35A.

 

[Rossum]

Concur. At least one of the two ratings is exaggerated. There is no 21700 cell that delivers both a 35A CDR and 3700 mAh. You can have a 35A CDR in a lower-capacity cell, or you can have 3700 mAh (or even a bit more) but at a considerably lower CDR. The fact that EFEST misrepresents the cell's specs make it a "do not buy" for me.

 

[LechuckThePirate]

Well at least they are nice... I'm looking for good 21700 batteries for my new mech, but the best I found until now is nowhere to be bought ;( the Samsung INR21700 30T... anyone knows where that ones can be bought? If possible not in the USA.. to expensive to send them to Europe

 

[Robin Becker]

I have some good contacts to a company in Germany, that assemble with Samsung SDI cells. They told me, that Samsung has so far postponed the entry already twice. What I understood is that Samsung (but also LG and Sony) still have quality problems on cycle life and Voltage drop.
In any case I don´t believe neither iJoy, nor Efest with those 3750 mAh and 35A, or 40A. In Germany we have a saying: "wer einmal luegt, dem glaubt man nicht, und wenn er auch die Wahrheit spricht" - translated to english it would be: the one who lies you don´t believe anymore, even if he tells the truth.

 

[Baditude]

Unfortunately, the choices available for the 21700 format is currently pretty limited.

The Samsung 30T 35A 3000mAh 21700...an incredible 40A 3100mAh battery! will be available at some point at www.enercig.com, as they were the company that donated samples to Mooch to be tested. They appear to have their roots in Europe.

 

[Ralph_K]

It seems that the best available 21700 battery is the 24A Ijoy.

 

[Robin Becker]

It seems that the best available 21700 battery is the 24A Ijoy.

How do you come to this conclusion? The 20700 from Molicel with 2950 mAh can reach up to 30A, so at 80W and more I would rather have this one.

 

[Baditude]

• Golisi S35 40A 3750mAh 21700…overrated but performs better than the iJoy 21700
• iJoy 40A 3750mAh 21700...hugely overrated but better than NCR20700B

 

[untar]

Well... they got the (+) and (-) right on that label. It's a start

 

[Ralph_K]

How do you come to this conclusion? The 20700 from Molicel with 2950 mAh can reach up to 30A, so at 80W and more I would rather have this one.

20700 and 21700 is 2 different size batteries. I'd rather have a battery that fits my mod. I have an Eleaf pico 21700 it comes with a adapter for 18650 but not 20700. Maybe you can buy an 20mm to 21mm adapter separately I haven't researched it.

 

[Ralph_K]

• Golisi S35 40A 3750mAh 21700…overrated but performs better than the iJoy 21700
• iJoy 40A 3750mAh 21700...hugely overrated but better than NCR20700B

Thanks for that. I ordered 2 of the Golisi batteries from directvapor. Not the cheapest place but not that far away

 

[Rossum]

Maybe you can buy an 20mm to 21mm adapter separately I haven't researched it.

A few wraps of clear packing tape around a 20700 would make it the same dimensions as a 21700.

 

[untar]

Usually 20700s just go fine in mods that take 21700s, it's only 0.5mm less to each side. Little more than the difference between double wrapped 18650 and ....ty wrapped 18650. The aegis even has only one battery door for 2X700 and no adapter at all.

 

[Robin Becker]

20700 and 21700 is 2 different size batteries. I'd rather have a battery that fits my mod. I have an Eleaf pico 21700 it comes with a adapter for 18650 but not 20700. Maybe you can buy an 20mm to 21mm adapter separately I haven't researched it.

Hi Ralph, if you compare some high current 20700 like the one from Molicel, you will see, that they have 20,5 mm - 20,7 mm Diameter....it is almost 21 mm diameter and would fit in any 21700 Mod I know.
It is my personal opinion, but I would not use any high-current battery, that I don´t know what is behind the curtain. The risk is too high, especially when we know, that Chinese brands like to overrate their batteries.

 

[Ralph_K]

I just ordered a couple of Golisi S35 21700 batteries. Mooch rates them at 30A 3700MaH. I don't do low ohm builds right now using a LG HG2 but I'm drawing under 6A according to the mod. Its good to know you can use 20700 in place of 21700

 

[Robin Becker]

I just ordered a couple of Golisi S35 21700 batteries. Mooch rates them at 30A 3700MaH. I don't do low ohm builds right now using a LG HG2 but I'm drawing under 6A according to the mod. Its good to know you can use 20700 in place of 21700

I don´t think that the Golisi S35 are 30A, I read even elsewhere, that Mooch rated Vapecell with 24A and they seems to be the same.
In fact it is easy to take 2 reference batteries from Samsung, that Mooch already tested. The INR21700-30T has 3000 mAh and 35A-40A. The INR21700-40T with 4000 mAh and 30A.
It will be realistic to assume that Chinese manufacturer would be always around 10%-20% with lower performance in comparison to Samsung SDI.
Therefore the 24A with 3750 mAh of Vapecell would fit more, rather 30A...but that is my opinion ONLY ;-)

 

[Mooch]

I don´t think that the Golisi S35 are 30A, I read even elsewhere, that Mooch rated Vapecell with 24A and they seems to be the same.
In fact it is easy to take 2 reference batteries from Samsung, that Mooch already tested. The INR21700-30T has 3000 mAh and 35A-40A. The INR21700-40T with 4000 mAh and 30A.
It will be realistic to assume that Chinese manufacturer would be always around 10%-20% with lower performance in comparison to Samsung SDI.
Therefore the 24A with 3750 mAh of Vapecell would fit more, rather 30A...but that is my opinion ONLY ;-)

No one checks test results anymore?

Bench Test Results: Golisi S35 40A 3750mAh 21700…overrated but performs better than the iJoy 21700