I have just bought an Led Lenser Frogman torch which has 4Nr AA alkaline cells installed. I am looking to run NIMH but am a bit unclear if they will do ok and not damage the torch. I am a newbee but have read that the NIMH voltage 4x1.2=4.8 wil not be up to the 4x1.5-=6 of the alkalines and if the torch has a dc/dc convertor then the reduced voltage will in some way burn it out or reduce the life. This is what i have picked up in the short space of browsing this very interesting forum. Can anybody shed some light on the subject !!! Cheers