Are these protected NCR18650B batteries?

[etc]

Аre these protected? They look like their length indicates there is a protected circuit but on the other hand, it says NCR18650B on them. Could it be the NCR18650B was just the basis for a protected cell, if so, who added the PCB?

Secondly, what are these batteries? They look very much like Sanyo 3500 mAh but not exactly the same on the plus end. A real Sanyo 3500mAh is in the top right hand corner. But the color matches and they look the right length for a non-protected cell which is what Sanyo 3500mAh cells are. Shorter than the light green NCR18650B.

 

[Lynx_Arc]

Not seeing the ends of the Panasonic cells I'm not sure if they are button or flat top cells. The wrappers appear to be that of a panasonic 3400/3500 18650 cell that are supposed to be 65mm long. I would measure the batteries. The NCR18650B is a good cell but not a high current cell at all it is rated to handle about 7A. I have a Anker power bank I got for cheap that has 5 of them in it and they are about 2 9/16 long or 65mm flat top cells. In parallel they should do 30A and have a capacity of about 17Ah prior to boosting output to 5V. I tore the power bank apart to see if I could fix the button on it that turns it on and shows the LED meter and found it was broken beyond repair plus I don't see it worth putting back together as I have other power banks. I was hoping to find some better 3000mah cells that do 20A but I'm not going to tear apart power banks that support fast charging on my phone or other phones. I tore apart an ONN 6700mah power bank and it has 2 generic 3350s in it likely Chinese perhaps fairly unimpressive.

 

[etc]

I have used NCR18650* for a number of years, I get it it's not a higher Amps cell but I don't need it to be, my highest drain device is about 2A at most. 7A is more than enough.
It just looks like a protected cell. I think I will run one in a light and find out. If they suddenly cut off or gently drive off into the sunset.

 

[Lynx_Arc]

I have used NCR18650* for a number of years, I get it it's not a higher Amps cell but I don't need it to be, my highest drain device is about 2A at most. 7A is more than enough.
It just looks like a protected cell. I think I will run one in a light and find out. If they suddenly cut off or gently drive off into the sunset.

It doesn't look like protected to me, the 5 I have in a power bank look the same. The only protected 18650 I have is a USB one. The USB one is button top as are the ones I gleaned googling it. The protected ones are listed at 69mm or 4mm longer.

 

[Stefano]

They seem unprotected.
The only protected NCR18650B I have seen are button tops, he was selling them years ago Banggood or Fasttech (I don't remember exactly)

I don't know if they exist flat.
Here are the measures of the protected one:

Test of Panasonic NCR18650B Protected 3400mAh (Green)

 

[etc]

They do have button tops. Forgot to include in the pic.
and the length is 70mm which is similar to the one above. It looks like a protection circuit.

 

[Charlie Hustle]

The button tops will increase the likelihood of those batteries being protected but not guarantee it. There are some pictures with dimensions that might help you on imrbatteries.com.

Here are some more helpful articles:

The Anatomy of Protected LiIon Batteries

Is My Battery Protected?

 

[etc]

this is very helpful:

Is my battery protected

 

[Lynx_Arc]

They do have button tops. Forgot to include in the pic.
and the length is 70mm which is similar to the one above. It looks like a protection circuit.

It is probably protected then as the flat top unprotected is 5mm shorter and the protected I saw listed online was 69mm.

 

[etc]

Mine came out to 69.5mm

 

[Charlie Hustle]

Mine came out to 69.5mm

According to the measurements on imrbatteries.com they should be protected.