IMR "safe chemistry" batteries

 
IMR batteries are often referred to as "safe chemistry" batteries as they are a different chemical composition to standard Li-Ion (Lithium Cobalt) batteries, with lower internal resistance, and should be able to deliver a higher current while maintaining their capacity and avoiding thermal build up. IMR strictly speaking applies to Lithium Manganese chemistry but has become a generic term applied to any high discharge batteries.

Here are discharge tests carried out with constant current for brands likely to be of interest to the vaping community (click on the graphs to enlarge):

Aoso
Aoso 18500 1100mAh (20A rated)  
Here is how it performed at 1A, 5A, 10A, 15A, 20A, 25A and 30A discharge. Excellent quality, can be pushed well beyond the amp rating.

Aoso 18650 2900mAh (35A rated)  
Here is how it performed at 5A, 10A, 20A, 30A, 35A and 40A. Good quality. Performance is excellent, it can be pushed beyond the rating.

Aoso 18650 3000mAh (30A rated)  
Here is how it performed at 5A, 10A, 20A, 30A, 35A and 40A. Good quality. Performance is excellent, it can be pushed beyond the rating.
Aoso 18650 3500mAh (25A rated)  
Here is how it performed at 0.25A, 1A, 5A, 10A, 20A, and 30A, . Good quality. Performance is excellent, highest capacity IMR battery on the market.

Aoso 26650 4500mAh (60A rated)  
Here is how it performed at 5A, 10A, 20A, 30A, 35A and 40A. Good quality. Actual capacity is 5000mAh, Excellent performance up to 30A.



ASPIRE
Aspire 18650 1800mAh (40A rated) 
Here is how it performed at 20A, 30A and 40A discharge. Does a decent job at 40A, but has a big voltage dip initially before recovering.

AW 
AW 18350 (12A rated) 
Here is how it performed at 5A, 10A and 15A discharge.
Excellent quality, can be pushed beyond their rating.

Basen
Basen 18350 (10A rated) 
Here is how it performed at 1A, 2.5A, 5A and 10A. Average quality. Only managed to perform up to 5A, and performance already dropping off at that.


Basen 18650 2600mAh (40A rated)
Here is how it performed at 5A, 10A, 20A, 30A, 35A and 40A. Good quality. Performance good up to 35A, but it struggles at the 40A amp rating.


Basen 18650 3100mAh (30A rated)
Here is how it performed at 5A, 20A, 30A, 35A and 40A. Very good quality. Performance is dropping off at 30A, but it can be pushed beyond the amp limit.

Efest 
Efest 18650 2100mAh (38A rated)
Here is how it performed at 5A, 10A, 20A, 30A, 35A, 38A and 40A. Average quality, performs well up to 30 amps, falls well short of the 38A rating rating.


Efest 18650 2800mAh (35A rated)
Here is how it performed at 5A, 10A, 20A, 30A, 35A and 40A. Very good quality. Exceed claimed capacity. Performance drops at 35A, but canan be pushed a little beyond the amp rating.


Efest 26650 5200mAh (15A rated) 
Here is how it performed at 5A, 10A, 15A and 20A. Does an excellent job at 10A, struggling at 15A.


ENOOK
Enook 18350 (20A rated)
Here is how it performed at 5A, 10A and 15A discharge. Poor quality, starting to struggle at 10A.
Enook 18500 (20A rated)
Here is how it performed at 5A, 10A, 15A and 20A discharge.
Does an excellent job up to 15A, struggles at 20A.

Enook 18650 3600mAh (35A rated)
Here is how it performed at 5A, 10A, 20A and 30Adischarge.
A bit short of the claimed capacity and struggling above 10A.


IMREN
Imren 18500 (20A rated)  
Here is how it performed at 5A, 10A, 15A, 20A and 25A discharge. Excellent quality, can be pushed a little beyond the amp rating.





















Imren 26650 (60A rated)
Here is how it performed at 5A, 10A, 20A, 30A and 35A. Poor quality, struggles above 15A.

 LG 
LG 18650 HE2 (20A rated) 
Here is how it performed at 1A, 5A, 10A, 20A and 30A. Very good quality, performs well up to the amp rating.

LG 18650 HE4 (20A rated)
Here is how it performed at 1A, 5A, 10A, 20A, 30A,35A and 40A. Excellent quality. Can be pushed well beyond the amp rating.

LG 18650 HG2 (20A rated)
Here is how it performed at 1A, 5A, 10A, 20A and 30A. Very good quality. Performs well up to the amp rating.


LG 18650 MH1 (10A rated)
Here is how it performed at 1A, 5A, 10A, 20A and 30A. Very good quality. Can be pushed a little beyond the amp rating.

LG 18650 MJ1 (10A rated) 
Here is how it performed at 5A, 10A, 15A, 20A and 30A. Very good quality. Can be pushed a little beyond the amp rating.

Samsung
Samsung 18650 Green INR18650-25R (20A rated) 
Here is how it performed at 5A, 10A, 15A, 20A, 30A, 35A and 40A discharge. Exceptional quality, can be pushed far beyond the amp rating.

Samsung 18650 Blue INR18650-25R (20A rated) 
Here is how it performed at 5A, 10A, 15A, 20A, 30A, 35A and 40A discharge. Exceptional quality, can be pushed far beyond the amp rating.

Samsung 18650 INR18650-30Q (15A rated) 
Here is how it performed at 5A, 10A, 15A, 20A, 30A, 35A and 40A discharge. Exceptional quality, can be pushed far beyond the amp rating.

ShockLi
ShockLI 18350 (10A rated) 
Here is how it performed at 1A, 5A, 10A, 15A and 20A discharge. Excellent quality, can be pushed well beyond the amp rating.
ShockLi 18500 (15A rated)  
Here is how it performed at 1A, 5A, 10A, 15A, 20A, 25A and 30A discharge. Excellent quality, can be pushed well beyond the amp rating.

ShockLi 18650 2400mAh (30A continuous/35A pulse rated) 
Here is how it performed at 1A, 5A, 10A, 20A, 30A and 35A discharge. Excellent quality, can be pushed beyond the amp rating.
ShockLi 18650 2500mAh (30A continuous/35A pulse rated) 
Here is how it performed at 5A, 10A, 20A, 30A, 35A and 40A discharge. Excellent quality, can be pushed well beyond the amp rating.
ShockLi 26650 3500mAh (30A continuous/60A pulse rated)  
Here is how it performed at 5A, 10A, 20A, and 30A discharge. Very good quality, performs well up to the amp rating.

ShockLI 26650 4200mAh (30A continuous/60A pulse rated) 
Here is how it performed at 5A, 10A, 20A, 30A,35A and 40A discharge.Very good quality. Performance drops off a bit at 30A, but it can be pushed beyond the amp rating.
Sibeile
Sibeile 18500 (22A rated) 
Here is how it performed at 5A, 10A, 15A, 20A and 25A discharge. Excellent quality, can be pushed beyond the amp rating.
Solotech
Solotech 18350 (14A rated) 
Here is how it performed at 5A, 10A, 15A and 20A discharge. Excellent quality, performs well beyond the amp rating.

Solotech 18500 (20A rated)
Here is how it performed at 5A, 10A, 15A, 20A, 25A and 30A discharge. Excellent quality, can be pushed beyond the amp rating.

TORCHY
Torchy Orange 18650 3000mAh (30A rated)
Here is how it performed at 5A, 10A, 15A, 20A, 30A, 35A and 40A discharge. Exceptional quality, can be pushed beyond the amp rating.
Torchy Orange 18650 3500mAh (20A rated)
Here is how it performed at 0.25A, 5A, 10A, 20A, and 30A discharge. Exceeds claimed capacity, Excellent performance up to 15A, falling off a bit at 20A.


























 





TENSAI
Tensai 18350 (14A rated) 
Here is how it performed at 5A, 10A, 15A and 20A discharge. Good quality, performs well up to the amp rating.