I see that apparently a regular 510 can be used but then I dont know if I should use a LR 510 or a high drain 14500? I thought I read to NOT use a LR 510 with the high drain battery. Am I correct on that? If I cannot which combination should I use, the LR 510 with a regular 14500 or a regular 510 with the high drain 14500. I dont know really what the high drain actually means but anyway any help would be great. Thanks.