ICR18650-26A, anyone familiar?

[RenaissancePuffer]

We had a laptop battery pack that was no longer useful as the laptop itself is completely dead. I decided to disassemble the pack, and it had 6 pink batteries (18650's) in it labeled as follows:

ICR18650-26A
SAMSUNG-SDI
6B4

Just doing some research, it looks like these are 2600 mAh cells, though I can't find any information on if these are protected. Anyone happen to be familiar with these cells?

 

[Jason365]

They most likely not protected. There is a small pcb that should be inside that disassembled battery case that is the protection circuit. This made all the batteries protected while they were in the factory enclosure.

Jason

 

[RenaissancePuffer]

Thanks Jason, that's what I was thinking as well, it would almost seem redundant to have protected PCB's in each of the cells as well as the protection circuit inside of the laptop battery pack.

Ah well, I have protected batteries on the way, these will likely last me until those get here. I have 6 of them fully charged

 

[Hotot]

I disasembled 2 old laptop batterys and have a ton of unprotected 18650's and 17670s. All the ones I tried managed to get charged up but idk how fast the charge will drop. (seems to happen to them when they get old?) I was thinking i could protect them with a top mount round pcb PCB for 3.7V Li-ion (18650/18500) cell Battery (3A +/-1A Limit). Not sure if it's a good idea or not but it would be a whole army of batteries for $1.74 a pop.

 

[RenaissancePuffer]

I disasembled 2 old laptop batterys and have a ton of unprotected 18650's and 17670s. All the ones I tried managed to get charged up but idk how fast the charge will drop. (seems to happen to them when they get old?) I was thinking i could protect them with a top mount round pcb PCB for 3.7V Li-ion (18650/18500) cell Battery (3A +/-1A Limit). Not sure if it's a good idea or not but it would be a whole army of batteries for $1.74 a pop.

I would absolutely love to do this as well. I have 12 18650's here that are unprotected, all 2600 mAh. Curious if anyone else has done this?

Heck, 12 of these batteries might actually last me a decade or so if they do well sitting on the shelf and only being recharged every 40 days or so.. heh

 

[Hotot]

I need to get a better soldering iron to tr it that pcb chip looks tiny and my soldering iron just has a massive tip I'm also not very good at it lol, but better since i watched an instructional video someone posted. I'm no electrical engineer but it seems to me when they get towards the end of their life they can still hold the charge but the mAh goes down to nothing. I know the laptops that used to use them lasted only 15m or so on batteries that used to last them at least 6 hours. The one random one I did use lasted several hours equal to 3 or 4 factory 510 batteries, I stopped using it after that being too lazy to check the volts and afraid it would explode on me

 

[breno]

I found this but I am not sure if is the same, the first part of the number is but there is no -26A at the end , however I expect that is for 2600mA.

It says they are protected

18650 3.7V 2600mAh rechargeable battery FULLY PROTECTED with PCB Lithium Ion

However I am not 100% sure it is the same battery.

 

[RenaissancePuffer]

The ICR portion of the part number specifies Lithium Ion (I) Cobalt Chemisty (C) Rechargeable (R), from what I found here -
CandlePowerForums - View Single Post - What does IMR stand for/mean?

My guess is that it's an industry standard identification number like 18650 is for the size of the cell, to show the type/chemistry.

Everything that I had been able to dig up on these cells, they are unprotected. Especially considering they came out of a laptop battery pack that had a large PCB on the inside that likely provides protection to the entire set of batteries.