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
AWT
Basen
Enook
Imren
LG
Panasonic/Sanyo
Samsung
ShockLi
Solotech
Sony
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 18350 800mAh (15A rated)  
 This battery complies with UK regulations.
Here is how it performed at 1A, 5A, and 10A constant current discharge. I would rate these at 5A maximum current.

   
Aoso 18500 1100mAh (20A rated) 
This battery complies with UK regulations.
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)     
This battery complies with UK regulations.
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)
This battery complies with UK regulations.
 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) 
This battery complies with UK regulations. 
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)
 This battery complies with UK regulations.
 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) 
 This battery complies with UK regulations.
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)
This battery complies with UK regulations.
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)  
 This battery complies with UK regulations.
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)
This battery complies with UK regulations
Here is how it performed at 20A, 30A and 40A constant current. I would rate these at 30A maximum current.

   
AW 

AW 18350 (12A rated)
This battery complies with UK regulations.
Here is how it performed at 5A, 10A, and 15A, 2constant current. I would rate these as 15A maximum current.
  
AWT
AWT 18650 3000mAh (40A rated)

This battery complies with UK regulations.
Here is how it performed at 250mA, 1A, 5A, 10A, 20A, and 30A constant current. I would rate these as 10A maximum current.
        
Basen
 
Basen 18350 700mAh  (10A rated)
This battery complies with UK regulations.
Here is how it performed at 1A, 2.5A,, 5A and 10A  and constant current. I would rate these as 5A maximum current.
    
Basen 18500 button top 1100mAh (15A rated)
This battery complies with UK regulations.
Here is how it performed at 1A, 5A, 10A, 15A and 20A constant current. I would rate these as 20A maximum current.
      
Basen 18650 2500mAh (40A rated)
This battery complies with UK regulations.
Here is how it performed at 10A, 20A, 30A, 35A, and 40A constant current. I would rate these as 35A maximum current.
   
Basen 18659 2600mAh (40A rated)

This battery complies with UK regulations.
Here is how it performed at 10A, 20A, 30A, 35A, and 40A constant current. I would rate these as 35A maximum current.
     
Basen 26650 3500mAh (60A rated)
This battery complies with UK regulations.
Here is how it performed at 5A, 10A, 20A, 30A, 35A, and 40A constant current. I would rate these as 35A maximum current.
    
Basen 26650 4500mAh (60A rated)

This battery complies with UK regulations.
Here is how it performed at 5A, 10A, 20A, 30A, 35A, and 40A constant current. I would rate these as 35A maximum current. 


 
Efest
   
Efest 14500 900mAh 650mAh (6.5A continuous/9.75A pulse rated)

This battery complies with UK regulations.
Here is how it performed at 250mA, 1A, 5A, 7.5A and10A constant current. I would rate these at 7.5A maximum current.
    
Efest18350 700mAh (7A continuous/10.5A pulse rated)
This battery complies with UK regulations.
Here is how it performed at 250mA, 1A, 5A, 7.5A and10A constant current. I would rate these at 5A maximum current.








  
 Efest18500 1000mAh (10A continuous/15A pulse rated)
This battery complies with UK regulations.
Here is how it performed at 250mA, 1A, 5A, 10A, 15A, 20A and 25A constant current. I would rate these at 20A maximum current.


   

Efest 30A 2100mAh 18650 ( 20A constant/30A pulse rated)

This battery complies with UK regulations.
Here is how it performed at 250mA, 1A, 5A, 10A, 20A and 30A constant current. I would rate these at 20A maximum current.
       

Efest 38A 18650 2100mAh (25A constant/38A pulse rated)

This battery complies with UK regulations.
Here is how it performed at 250mA, 1A, 5A, 10A, 20A, 30A, 35A and 40A constant current. I would rate these at 30A maximum current.

      

Efest 18650 2500mAh (20A constant/35A pulse rated)  
This battery complies with UK regulations.
Here is how it performed at 250mA, 1A, 5A, 10A, 20A, 30A, 35A and 40A constant current. I would rate these at 30A maximum current.

Efest 18650 2600mAh (25A constant/40A pulse rated)
This battery complies with UK regulations.
Here is how it performed at 250mA, 1A, 5A, 10A, 20A, 30A, 35A and 40A constant current. I would rate these at 35A maximum current.
       

Efest 18650 3000mAh (20A constant/35A pulse rated)
This battery complies with UK regulations.
Here is how it performed at 250mA, 1A, 5A, 10A, 20A, 30A, 35A and 40A constant current. I would rate these at 30A maximum current.

Efest 18650 3100mAh (10A constant/20A pulse rated)    

This battery complies with UK regulations.

Here is how it performed at 250mA, 1A, 5A, 10A, 20A, and 30A constant current. I would rate these at 20A maximum current.
   
Enook
Enook 18350 800mAh (20A rated)
This battery complies with UK regulations.
Here is how it performed at 5A, 10A and 15A constant current. I would rate these at 10A maximum current.
Enook 18500 1200mAh (20A rated)
This battery complies with UK regulations.
Here is how it performed at 5A, 10A, 15A and 20A constant current. I would rate these at 15A maximum current.




IMREN
Imren 18500 1100mAh (20A rated)
This battery complies with UK regulations.
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)
This battery complies with UK regulations.
Here is how it performed at 5A, 10A, 20A, 30A and 35A constant current. I would rate these at 35A maximum current.







                                              Imren 18650 2500mAh (40A rated)
This battery complies with UK regulations.
Here is how it performed at 1A, 5A, 10A, 20A, 30A, 35A  and 40A constant current. I would rate these at 30A maximum current.
Imren 18650 2800mAh (35A rated)
This battery complies with UK regulations.
Here is how it performed at 250mA, 1A, 5A, 10A, 20A, and 30A constant current. I would rate these at 10A maximum current.
         

Imren 18650 2900mAh (30A rated)
This battery complies with UK regulations.
Here is how it performed at 250mA, 1A, 5A, 10A, 20A, 30A and 35A constant current. I would rate these at 20A maximum current.
             
Imren 26650 3600mAh (60A rated)
This battery complies with UK regulations.
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)
This battery does not comply with UK regulations.
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)
This battery does not comply with UK regulations.
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)
This battery does not comply with UK regulations.
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)
This battery does not comply with UK regulations.
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)
This battery does not comply with UK regulations.
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)
 This battery does not comply with UK regulations.
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)


This battery does not comply with UK regulations.
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)
This battery does not comply with UK regulations.
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)
This battery does not comply with UK regulations.
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)
This battery does not comply with UK regulations.
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)
This battery does not comply with UK regulations.
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)
This battery does not comply with UK regulations.
Here is how it performed at 5A, 10A, 15A, 20A, 30A, 35A and 40A constant current. I would rate these at 35A maximum current.



   
ShockLi
  
ShockLI 18350 700mAh (10A rated)
This battery complies with UK regulations.
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)


This battery complies with UK regulations. 
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)
This battery complies with UK regulations.
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)
This battery complies with UK regulations.
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)
This battery complies with UK regulations.
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)
This battery complies with UK regulations.
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)
This battery complies with UK regulations.
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)
This battery complies with UK regulations.
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) 
This battery does not comply with UK regulations.
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) 
This battery complies with UK regulations.
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 700mAh (14A rated)
This battery complies with UK regulations.
Here is how it performed at 5A, 10A, 15A and 20A constant current. I would rate these at 15A maximum current.

Solotech 18500 1100mAh  (20A rated)
This battery complies with UK regulations.
Here is how it performed at 5A, 10A, 15A, 20A, 25A and 30A constant current. I would rate these at 30A maximum current.

  
Sony VTC5
Sony VTC5 disappeared from the market for a couple of years, and when they re-appeared on the market, the quaulity has been variable, none that I have tested have been as good as the originals. Below are the test results of a VTC5 from 2013 and more recent tests of VTC5s from a few different sellers. All discharged at 10A, 20A, 35A and 40A constant current. None of these batteries comply with UK regulations.

2013 VTC5
VTC5 from Cloudstix
The best VTC5 I have tested since they re-appeared, but not the same performance. I would rate it at 35A.
VTC5 from Ebay seller Ecoluxshop
Another decent battery, not far behind the Cloudstix VTC5 for performance. I would rate it at 35A.
VTC5 from Ebay seller insatint
Struggles above 20A with erratic dips in the voltage. 


 
TORCHY

Torchy 18350 700mAh (10A rated)
This battery complies with UK regulations.
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)
This battery complies with UK regulations. 
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)
This battery complies with UK regulations.
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)
This battery complies with UK regulations.
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)
This battery complies with UK regulations.
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)
This battery complies with UK regulations.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)
This battery complies with UK regulations.
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) Showing heat damage caused by teting.
This battery does not comply with UK regulations.
Here is how it performed at 5A, 10A, 15A and 20A constant current. I would rate these at 15A maximum current.