,
......both the Samsung and Panasonic are classified as "industrial cells" (with PCB, thanks God). The Samsung has a flat-top.
Hi kreisler. You might want to look back at posts
#11 and
#12. Samsung does not provide cells with PCB's added. There are no Li-Ion cell manufacturers that I am aware of, that do so. These cells are intended to be used in the making of battery packs for laptops and such. The packmaker is required beforehand, to have a protection dircuit designed specifically for the intend device these "packs" will be used in, before the cell manufacturer will even sell them the cells. This indirectly, applies to the nipples that have been added to manufacturer's cells, as well. Both protection circuits and nipples, present on cells of this type, have been added by third parties, or distributors such as AW, or Redilast, as these cells were never intended to be either sold, or used, individually by consumers.
I have two of the Samsung 30A cells that I bought from a Hong Kong vendor. These cells do not have added protection circuits, nor am I aware of any Samsung ICR18650 30A (or the 4.30 Volt 28A) cells that do. I'm not sure where Jason obtained his sample. Many Samsung, as well as Panasonic and other manufacturer's cells do have PCBs and/or nipples that have been added, but again, these cells will have either the vendor's, or distributor's label, not the actual manufacturer's label.
Dave