Efan 40a imr 18650

[Sirius]

There is a new battery I had been seeing, the Efan purple 40A IMR marked:
EiZFAN 3.7V 2000mAh
IMR 18650 LI-MN 40A

These are marked for the maximum discharge rate of 40A
The Discharge Current is 20A

Specifications:
Typical Capacity : 2030mAh @ 0.2C Discharge
Minimum capacity : 2000mAh @ 0.2C Discharge
Nominal voltage :3.7V
Standard Charge: CC/CV,0.2C5A, 4.20V
Standard Discharge: CC,0.2C5A, 3.00V
End-of-charge Voltage: 4.20V±0.05V
End-of-charge Current: 0.01 C5A （At CV mode）
End-of-discharge Voltage: 3 V
Quick Charge Current: 2000mA （1.0 C5 rate）1C charge
Quick Discharge Current: 20A （10.0 C5 rate）10C Discharge
Max Discharge Current: 40A （20.0 C5 rate）20C Discharge
Initial Impedance: Max:18mΩ
Operating temperature: Charging： 0℃~45℃Discharging：-20℃~60℃
Storage temperature: -5℃~35℃
Diameter : 18.3 + 0.2/-0.3 mm ( Max. 18.5 mm )
Height : 65.0 ± 0.2 mm ( Max. 65.2 mm )

Not bad batteries I ordered a couple to try.


ETA

Feel free to post any new relabeled batteries.
Not a cell vs. cell thread.

 

[Froth]

If you squint, the top line of writing on that battery looks like "GIZFAN".

These are the same cells as the VAMPED 40A, if you want any info on them - http://www.e-cigarette-forum.com/forum/batteries-chargers/574677-vamped-40-amp-18650-2000-mah.html

The general consensus seems to be that the Sony VTC4, VTC5, LG HE2 and Samsung 25R are all better choices than this "40A" 2000mah battery. It is only a 20A constant battery, 40A pulse. Every other battery I listed beats this cell in both discharge capability and MAH.

 

[Wraith504]

If you squint, the top line of writing on that battery looks like "GIZFAN".

These are the same cells as the VAMPED 40A, if you want any info on them - http://www.e-cigarette-forum.com/forum/batteries-chargers/574677-vamped-40-amp-18650-2000-mah.html

The general consensus seems to be that the Sony VTC4, VTC5, LG HE2 and Samsung 25R are all better choices than this "40A" 2000mah battery. It is only a 20A constant battery, 40A pulse. Every other battery I listed beats this cell in both discharge capability and MAH.

2nd this post, I will stick to the vtcs with 30amps over these anyday.

 

[pnyc]

This Eizfan has an internal resistance of 18mΩ while the VTC5 has an internal resistance of 13mΩ.

Initial Impedance: Max:18mΩ

No way a battery with 38% higher internal resistance (aka -more voltage sag under load and more heat) will out amp the VTC5 by 33%.

 

[Sirius]

Sonys have been relabeled to Xtar. The point of this thread is not which battery is better but to point out all the new batteries hitting the market. These are fine for mid sub ohm builds. I am aware that VTC4 and VTC5 cells are better. If you know of any relabled batteries feel free to post them here.

XTAR HIGH DRAIN 18650 2100MAH 30A (SONY VTC4 CELL)

Specifications:
Nominal Capacity: 2000 mAh
Typical Capacity: 2100 mAh
Nominal Voltage: 3.6V
Discharge End Voltage: 2.5V
Standard Charging Current: 1.5A
Charging Voltage: 4.20+-0.05V
Max. Continuous Discharging Current: 30A
Internal Resistance: 12 milli-ohms

Protection: No

Flat Top

 

[Sirius]

If you squint, the top line of writing on that battery looks like "GIZFAN".

These are the same cells as the VAMPED 40A, if you want any info on them - http://www.e-cigarette-forum.com/forum/batteries-chargers/574677-vamped-40-amp-18650-2000-mah.html

The general consensus seems to be that the Sony VTC4, VTC5, LG HE2 and Samsung 25R are all better choices than this "40A" 2000mah battery. It is only a 20A constant battery, 40A pulse. Every other battery I listed beats this cell in both discharge capability and MAH.

Did you even bother to read the OP?

 

[anumber1]

Did you even bother to read the OP?

I don't see a question in your original post.
What I do see it a battery that is purple and has overstated ratings.

Don't see much of a problem with pointing out better, more inexpensive, accurately rated batteries.

I personally feel that buying batteries that are labeled with overstated ratings is just wasting money. Why not buy a good cell without buying bogus marketing?

 

[Sirius]

I don't see a question in your original post.
What I do see it a battery that is purple and has overstated ratings.

Don't see much of a problem with pointing out better, more inexpensive, accurately rated batteries.

I personally feel that buying batteries that are labeled with overstated ratings is just wasting money. Why not buy a good cell without buying bogus marketing?

The 40A rating is the maximum discharge per the specs I posted. As with Efest they put that on in place of the current rating. Not over rated just printed on the cell where most put the current output but as with any cell, it's good to know the specs of the things.

"These are marked for the maximum discharge rate of 40A
The Discharge Current is 20A"

,,,and I'm not selling these things. It's just pertinent information for the EC users that run across these cells.

 

[Sirius]

If you squint, the top line of writing on that battery looks like "GIZFAN".

These are the same cells as the VAMPED 40A, if you want any info on them - http://www.e-cigarette-forum.com/forum/batteries-chargers/574677-vamped-40-amp-18650-2000-mah.html

The general consensus seems to be that the Sony VTC4, VTC5, LG HE2 and Samsung 25R are all better choices than this "40A" 2000mah battery. It is only a 20A constant battery, 40A pulse. Every other battery I listed beats this cell in both discharge capability and MAH.

Good thread there..thnx for the link!

 

[Sirius]

Where I found and ordered Efan. They are pretty good batteries for the money.
Efan IMR 18650 2000mAh 40amp - RTD vapor

 

[Baditude]

The confusing issue about battery amp ratings is "continuous discharge ratings" vs "pulse or burst" discharge ratings.

"Maximum discharge rate" means what? Continuous or pulse? Its too nonspecific and forces the consumer to dig deeper into the spec sheet (if available) to define what that advertised rating really means. How many consumers are going to do that, or just assume it is what it is?

Traditional and common wisdom is to compare the continuous discharge rating with other models and brands within the battery industry. Pulse or burst ratings are arbitrary and differ from manufacturer and vender to another. Now advertisers are adding just "maximum discharge rate" into the mix to further confuse consumers.

The battery industry needs to develop standards that they all agree upon for advertising their battery spec and define what they mean. Somehow I don't think thats ever going to happen.

 

[Sirius]

The confusing issue about battery amp ratings is "continuous discharge ratings" vs "pulse or burst" discharge ratings. "Maximum discharge rate" means what? Continuous or pulse? Its too nonspecific and forces the consumer to dig deeper into the spec sheet (if available) to define what that advertised rating really means.

Traditional and common wisdom is to compare the continuous discharge rating with other models and brands within the battery industry. Pulse or burst ratings are arbitrary and differ from manufacturer and vender. Now advertisers are adding just "maximum discharge rate" into the mix to further confuse consumers.

I agree Badaiude...The Chinese are not very specific minded on any products though really. I suppose the maximum discharge rating means if you reach that amount of current drain, you will blow yo self up!

I saw this one with a "Ultra Discharge Current" WTH is ultra discharge current? lol

KeepPower IMR 26650 3.6V/3.7V 4200mAh High Drain Rechargeable Battery
Typical Capacity: 4200mAh
Normal Voltage: 3.7V
Ultra Discharge Current: 50A
4.2 volts max voltage and 3.6-3.7 volts nominal voltage
Flat top: Yes
Dimension: (D)26.50mm*(H)67.000mm
http://www.rtdvapor.com/keeppower-imr-26650-4200mah-50amp/