I quoted True Talon,he is the one who should be replying, it was his comment. Since you answered for him, can you verify the brand? Reading his posts he states that EFEST is the ONLY unprotected battery he uses. EFEST is made in China! His could have been a Fake. Although I have never had a problem when I used them, which was before I switched to and strictly use Samsung,LG,Sony,Panasonic/Sanyo for all my torches..mostly Unprotected High drain cells.