The model appears to be TCB6RXA.
Who or what is this cell? It came from a Dewalt power tool battery.
It measures out consistently around 2000mAh (all 5 between 1970 and 2010) and the current capability is very high - they do 16.5A in my modded S41,compared to only 15.0 for my best 30Q’s.
There are other markings on the cell, but they are different on all 5 batteries I pulled from this power tool battery pack,so I assume the varying markings are serial or lot numbers.
Red shrink wrap combined with a coloured washer reminds me of Sanyo cells.
A google search for sanyo 2000mAh 18650 batteries results in Sanyo / Panasonic UR18650RX
https://www.fasttech.com/product/1628902-sanyo-ur18650rx-3-6v-2000mah-rechargeable-li-ion
good 20a high drain cells.
running a pair in my homebrew regulated box mod.
good score!
Of course I googled TCB6RXA, but came up empty.
Lopan, your Google-fu is strong. Thanks!
I think these will be my “show off” cells until I stumble across something better.
They look a bit like these sanyo 2000mah li-ion cells, 3 vent, and has the same shape at the positive end.
John.