white led circuits
you have many leds...so best you put in series and regualte the current in the string using a led driver...
you can use boost led driver......surt on linear.com etc etc and others for led drivers....or you can make one yourse;lf out of a uc3845 uc3842.
its just a @current catcher"...current gets to threshold ..turn off
all the led drivers on web are SMD...if you want thru hole you have to use say uc3845 like i say.
you must drive leds current mode.......must
it too inefficent to do voltage mode....you done want ANY resistor s in series......you r batt muss be preserved