IMR "safe chemistry" batteries

 
The industry standared for batteries is IEC 61960 and strictly speaking, IMR applies to Lithium Manganese chemistry but has become a generic term applied to any high discharge 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. 

Any batteery sold in the UK must comply with The Batteries and Accumulators (Placing on the Market) (Amendment) Regulations 2015 and must have the capacity and crossed out wheelie bin symbol indelibly printed on the wrapper (not on a label). 
Batteries like these comply with UK regulations:

Batteries like these do not comply with UK regulaytions:


Here are discharge tests carried out with continuous current for brands likely to be of interest to the vaping community (click on the graphs to enlarge)
They are listeed alphabetically by brand/manufacturer -

Aoso
Aspire
AW
Basen
Enook
Imren
LG
Panasonic/Sanyo
Samsung
ShockLi
Solotech
Torchy
Tensai

The ratings in brackets are the manufacturers rating. I give my own rating based on constant current and retaining 70% capacity at high current.

Aoso
Aoso 18500 1100mAh (20A rated)  
Here is how it performed at 1A, 5A, 10A, 15A, 20A, 25A and 30A constant current discharge. I would rate these at 20A maximum current.

Aoso 18650 2100mAh (40A rated)  
Here is how it performed at 5A, 10A, 20A, 30A 35A and 40A constant current. I would rate these as 30A maximum current.

Aoso 18650 2500mAh (35A rated)  
Here is how it performed at 5A, 10A, 20A, 30A 35A and 40A constant current. I would rate these as 30A maximum current.


Aoso 18650 2900mAh (35A rated)  
Here is how it performed at 5A, 10A, 20A and 30Aconstant current. I would rate these as 20A maximum current.
  
Aoso 18650 3000mAh (30A rated)  
Here is how it performed at 5A, 10A, 20A and 30A constant current. I would rate these at 20A maximum current.
Aoso 18650 3500mAh (25A rated)  
Here is how it performed at 0.25A, 1A, 5A, 10A, 20A, and 30A constant current. I would rate these at 10A maximum current.

Aoso 26650 4500mAh (60A rated)  
Here is how it performed at 250mA, 1A, 5A, 10A, 20A, 30A, 35A and 40A constant current. I would rate these at 40A maximum current.



Aoso 26650 5000mAh (60A rated)  
Here is how it performed at 250mA, 1A, 5A, 10A, 20A, 30A and 35A constant current. I would rate these at 30A maximum current.

 

ASPIRE
Aspire 18650 1800mAh (40A rated) 
Here is how it performed at 20A, 30A and 40Aconstant current. I would rate these at 30A maximum current.


AW 
AW 18350 (12A rated) 
Here is how it performed at 5A, 10A and 15A constant current.
I would rate these at 15A maximum current.

Basen
Basen 18350 700mAh (10A rated) 
Here is how it performed at 1A, 2.5A, 5A and 10A constant current. I would rate these at 5A maximum current.

  
Basen 18500 button top1100mAh (15A rated) 
Here is how it performed at  1A, 5A, 10A ' 15A and 20A constant current. I would rate these at 20A maximum current.




Basen 18650 2600mAh (40A rated)
Here is how it performed at 5A, 10A, 20A, 30A, 35A and 40A constant current. I would rate these at 35A maximum current.



Basen 18650 2500mAh (40A rated)
Here is how it performed at 10A, 20A, 30A, 35A and 40A constant current. I would rate these at 35A maximum current.

Basen 18650 3100mAh (30A rated)
Here is how it performed at 5A, 20A, 30A, 35A and 40A constant current. I would rate these at 30A maximum current.


     
Basen 26650 3500mAh (60A rated)
Here is how it performed at 5A, 10A, 20A, 30A, 35A and 40A constant current. I would rate these at 35A maximum current.








   
Basen 26650 4500mAh (60A rated)
Here is how it performed at 5A, 10A, 20A, 30A, 35A and 40A constant current. I would rate these at 35A maximum current.



ENOOK
Enook 18350 (20A rated)
Here is how it performed at 5A, 10A and 15A constant current. I would rate these at 10A maximum current.
Enook 18500 (20A rated)
Here is how it performed at 5A, 10A, 15A and 20A constant current. I would rate these at 15A maximum current.


Enook 18650 2600mAh (40A rated)
Here is how it performed at 10A, 20A, 30A, 35A and 40A constant current. I would rate these at 30A maximum current. 



Enook 18650 3600mAh (35A rated)
Here is how it performed at 5A, 10A, 20A and 30A constant current. I would rate these at 10A maximum current.

IMREN
Imren 18500 1100mAh (20A rated)  
Here is how it performed at 5A, 10A, 15A, 20A and 25A constant current.I would rate these at 20A maximum current.






















Imren 18650 2100mAh (33A rated)
Here is how it performed at 5A, 10A, 20A, 30A and 35A constant current. I would rate these at 35A maximum current.


 
Imren 26650 3600mAh (60A rated)
Here is how it performed at 5A, 10A, 20A, 30A and 35A constant current. I would rate these at 35A maximum current.

 LG 

LG 18650 HB6 (30A rated) 
Here is how it performed at 1A, 5A, 10A, 20A, 30A, 35A and 40A constant current. I would rate these at 35A maximum current.


LG 18650 HE2 (20A rated) 
Here is how it performed at 1A, 5A, 10A, 20A and 30A constant current. I would rate these at 20A maximum current.

LG 18650 HE4 (20A rated)
Here is how it performed at 1A, 5A, 10A, 20A, 30A,35A and 40A constant current. I would rate these at 35A maximum current.

LG 18650 HG2 (20A rated)
Here is how it performed at 1A, 5A, 10A, 20A and 30A constant current. I would rate these at 30A maximum current.


LG 18650 MH1 (10A rated)
Here is how it performed at 1A, 5A, 10A, 20A and 30A constant current. I would rate these at 10A maximum current.


LG 18650 MJ1 (10A rated) 
Here is how it performed at 5A, 10A, 15A, 20A and 30A constant current. I would rate these at 20A maximum current..


Panasonic/Sanyo
 
NCR18650GA (10A rated) 
Here is how it performed at 5A, 10A, 15A, 20A and 30A constant current. I would rate these at 20A maximum current.




UR18650BF (10A rated) 
Here is how it performed at 1A, 5A, and 10A, constant current. I would rate these at 10A maximum current.


Samsung
Samsung 18650 Green INR18650-25R (20A rated) 
Here is how it performed at 5A, 10A, 15A, 20A, 30A, 35A and 40A constant current. I would rate these at 35A maximum current

Samsung 18650 Blue INR18650-25R (20A rated) 
Here is how it performed at 5A, 10A, 15A, 20A, 30A, 35A and 40A constant current. I would rate these at 35A maximum current.



Samsung 18650 INR18650-29E (8A rated) 
Here is how it performed at 5A, 10A, 15A, and 20A, constant current. I would rate these at 15A maximum current.


Samsung 18650 INR18650-30Q (15A rated) 
Here is how it performed at 5A, 10A, 15A, 20A, 30A, 35A and 40A constant current. I would rate these at 35A maximum current.


Samsung 18650 INR18650-35E (8A rated) Here is how it performed at 5A, 10A, 20A, and 30A, constant current. I would rate these at 20A maximum current.
   
ShockLi
  
ShockLI 18350 700mAh (10A rated) 
Here is how it performed at 1A, 5A, 10A, 15A and 20A constant current. I would rate these at 15A maximum current.
ShockLi 18500 1100mAh (15A rated)  
Here is how it performed at 1A, 5A, 10A, 15A, 20A, 25A and 30A constant current. I would rate these at 25A maximum current.

ShockLi 18650 2400mAh (30A continuous/35A pulse rated) 
Here is how it performed at 1A, 5A, 10A, 20A, 30A and 35A constant current. I would rate these at 35A maximum current.
ShockLi 18650 2500mAh (30A continuous/35A pulse rated) 
Here is how it performed at 5A, 10A, 20A, 30A, 35A and 40A constant current. I would rate these at 35A maximum current.
  
ShockLi 18650 3100mAh (35A continuous/40A pulse rated) 
Here is how it performed at 5A, 10A, 20A, 30A, 35A and 40A constant current. I would rate these at 30A maximum current

ShockLi 18650 3200mAh (30A continuous/35A pulse rated) 
Here is how it performed at 1A, 5A, 10A, 20A, and 30A,  constant current. I would rate these at 20A maximum current
  
ShockLi 26650 3500mAh (25A continuous/30A pulse rated) 
Here is how it performed at 5A, 10A, 20A, and 30A constant current. I would rate these at 35A maximum current.

ShockLI 26650 4200mAh (30A continuous/60A pulse rated) 
Here is how it performed at 5A, 10A, 20A, 30A,35A and 40A constant current. I would rate these at 35A maximum current.
 

ShockLI 26650 5200mAh (30A continuous/60A pulse rated) 
Here is how it performed at 5A, 10A, 20A, 30A,35A and 40A constant current. I would rate these at 30A maximum current.

     
  
Sibeile
Sibeile 18500 (22A rated) 
Here is how it performed at 5A, 10A, 15A, 20A and 25A constant current. I would rate these at 25A maximum current.
Solotech
Solotech 18350 (14A rated) 
Here is how it performed at 5A, 10A, 15A and 20A constant current. I would rate these at 15A maximum current.

Solotech 18500 (20A rated)
Here is how it performed at 5A, 10A, 15A, 20A, 25A and 30A constant current. I would rate these at 30A maximum current.

  
TORCHY

Torchy 18350 700mAh (10A rated) 
Here is how it performed at 5A, 10A, and 15A constant current. I would rate these at 15A maximum current.






Torchy 18500 1100mAh (15A rated)  
Here is how it performed at 5A, 10A, 15A, 20A, 25A and 30A constant current. I would rate these at 30A maximum current.


Torchy 18650 2400mAh (20A rated)
Here is how it performed at 5A, 10A, 15A, 20A, and 30A constant current. I would rate these at 30A maximum current.






   
Torchy 18650 2600mAh (30A rated)
Here is how it performed at 250mA, 1A, 5A, 10A, 15A, 20A, 30A, 35A and 40A constant current. I would rate these at 35A maximum current.






   

 

Torchy 18650 2900mAh (30A rated)
Here is how it performed at 5A, 10A, 15A, 20A, and 30A, constant current. I would rate these at 30A maximum current.

   
Torchy 18650 3000mAh (30A rated)
Here is how it performed at 5A, 10A, 15A, 20A, 30A, 35A and 40A constant current. I would rate these at 30A maximum current.
Torchy Orange 18650 3500mAh (20A rated)
Here is how it performed at 0.25A, 5A, 10A, 20A, and 30A constant current. I would rate these at 20A maximum current.























TENSAI
Tensai 18350 (14A rated) 
Here is how it performed at 5A, 10A, 15A and 20A constant current. I would rate these at 15A maximum current.