@Baditude
No.
Protected batteries don't have to be "cobalt" cells like ICR or LiCo cells. A protection circuit can be attached to all cells, no matter their chemistry, so even protected INR, IMR and NCR cells are available for purchase.
It's just highly unwise to use ICR or LiPo cells without any kind of protection circuit, but even IMR cells are advertised as "use in protected battery packs only" for a reason.
No.
Protected batteries don't have to be "cobalt" cells like ICR or LiCo cells. A protection circuit can be attached to all cells, no matter their chemistry, so even protected INR, IMR and NCR cells are available for purchase.
It's just highly unwise to use ICR or LiPo cells without any kind of protection circuit, but even IMR cells are advertised as "use in protected battery packs only" for a reason.