Another 'Help identify these cells' thread

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keltex78
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Another 'Help identify these cells' thread

Can anyone help identify these 18650 cells? I pulled these from a Dell laptop battery pack that had a failed board on it. These cells seem to have a very low internal resistance as they are able to provide 4+ Amps to a DD XM-L...

Printed either very faintly on or under the red overwrap:

  • The single letter "D"
  • A code common to these cells: "MKTM4C9"
  • A second numeric serial(?) code; two sample codes: "087006" "054179"

 

Ideas?


Keepin’ the “B” in BLF

Don wrote:
It sounds like the XM LEDs won’t really be suitable for flashlight use. Pity…

Edited by: keltex78 on 03/22/2012 - 12:21
chiefinspectorfinch
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I'm quite sure it's sanyo 2600mAh cell.

 

Society is like a pot full of nuts and bolts, finest pieces always end up on the bottom...

 

Shadowww
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You should be able to see something like UR18650F engraved in plastic - try shining at it with a light from a side for it to be more noticeable.

It 100% is sanyo, but not 100% the 2600mAh. Check the notes on pack itself - if it's e.g. 4800mAh then it has 2400mAh cells, 5200mAh = 2600mAh cells et cetera.

keltex78
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Looking closely, I see an engraved (not printed) "N02A" on the overwrap. I can't see referenced "UR18650F" etching anywhere on the packaging. I was just curious as these provided more current for the DD emitter than any other cells I own, including new TrustFire 3000mAh cells.


Keepin’ the “B” in BLF

Don wrote:
It sounds like the XM LEDs won’t really be suitable for flashlight use. Pity…

33696933
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its a Sanyo 2600mah cell 'cause of the light blue ring

aoyue2702
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100% positive its the sanyo 2600mAh . I've got quite a few of them.

feilox
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I got these blue ones off a dell battery. Their blue flat tops with +/- denoted on plastic. Says, “CF INR18650 3.7V”. Second roll says, “0 A025 2053J”

Don wrote:
It sounds like the XM LEDs won’t really be suitable for flashlight use. Pity…