Test/Review of King Kong INR26650E 4000mAh (Gold)

[HKJ]

[size=+3]King Kong INR26650E 4000mAh (Gold)[/size]

Official specifications:

• Capacity: 4000mAh-4200mAh
• Full charge: 4.2V
• Nominal voltage: 3.7V
• Cut-off: 2.75V
• Weight: 89g

The capacity is well above the marked value.

The cell works up to about 7A, at 10A or 15A the cells suddenly shows a large difference in capacity.

[size=+3]Conclusion[/size]

The cells has acceptable performance up to 7A, but I will not recommend using them at higher currents.



[size=+3]Notes and links[/size]

How is the test done and how to read the charts
How is a protected LiIon battery constructed
More about button top and flat top batteries

 

[vestureofblood]

Thanks again for doing these reviews, they are most helpful.

 

[tobrien]

good work!

 

[divine]

Do these fit in a C body Maglite?

Wiki says the definition of a C battery is 26.2 mm diameter, your chart says these are 26.2 mm diameter.

 

[vestureofblood]

Hi divine,

Your not going to get most 26650s to fit in the body of a C mag without boring the body out. I have heard of rare cases that people did get them in but its a very tight fit. Several members including myself offer boring service. You can click the link in my sigline for some pictures.

 

[degarb]

I am wondering, ignorantly a Li Ion virgin to anything but cell batteries, how would these work in an dual cell 18650 tk35?

What do I need to do to be safe with unprotected? Carry a volt meter after each charge? Buy a special charger? Never run on high? All, or some of these?

 

[Mr Happy]

I am wondering, ignorantly a Li Ion virgin to anything but cell batteries, how would these work in an dual cell 18650 tk35?

What do I need to do to be safe with unprotected? Carry a volt meter after each charge? Buy a special charger? Never run on high? All, or some of these?

Did you notice these cells are 26650 size?

They won't fit in an 18650 tube unless you replace it with a larger diameter body.

 

[degarb]

Did you notice these cells are 26650 size?

They won't fit in an 18650 tube unless you replace it with a larger diameter body.

I noticed after posting. But think. Dual. li ion preferable to. Single cell. And only a vague grasp of cccare and diapering of un protected cells. Like special charger , vtoltage cut offs, (typing on cell and cant see. Will fix later) countingcycles, runtime despite mah.