Taking into account the appearance of the positive poles (general appearance, number of legs, short overview of the CID/Venting System) and negative (grain of the metal surface, little information on this side, the withdrawal of one of the wraps of one of the tested cells would have affirmed or invalidated my assumption for sure because the Samsung have a punch, not the Sony) as well as the results obtained by HKJ (performance, temperatures, discharge capacities, etc.) all seem to indicate to me that These are Samsung model cell rewraps INR18650-30Q or 30QM (which is the same cell but manufactured in Malaysia).