These Panasonic 18650 batteries really are a reference in this field, they are also used by many other brands after "skinning" under another name. So why not buy the original as it is often much cheaper! The advertised capacity is correct and not as fanciful by some competitors. However, be aware that these batteries are found, it means no protection against overload or short circuit. Á used with care and with quality chargers controlling the end of charging by delta peak on pain of rapidly deteriorate. Very good behavior in flashlights bulb cree led powerful, the size of these batteries is respected and they go perfectly with the narrowest cree torches. Bel protective case which prevent short circuits during transportation and storage. Do not buy too cheap batteries 18650, invest in quality!