This is the best batteries offered for high discharge flashlights. The cell inside the battery is made by LG Chem in Korea. They add a high quality protection PCB/BMS along with the button/nipple top in an ISO 9001 certified factory to all safety standards. A black wrap is put over the top to hold it together. These are manufactured with a very high quality PCB including a Japanese Ricoh protection IC for 18A high current cutoff (most PCBs will not be able to handle this much current). This protection circuit protects the battery from mishandling, overcharge, or over discharge while allowing the battery to do its job properly. Quick Specs: Max Mfg: Modlite Systems