I tried to get a flashlight to use a 18650 battery, but have not liked what I have seen so far. I would like to find a flashlight to use one of these or two if possible but I think only one since my batteries are unprotected. I would like it to have a momentary-on (not momentary-off as almost every Chinese flashlight I have seen has!), and an extra dim setting. Thanks in advance for any help.