Hello, i recently built this RED 250mw for just 14$ with a module from ebay, i measured laser power with IR thermometer method and turned out it is ~231mw powah(im almost sure its coupled IR with red diode and real red is much less than that). The housing is a cheap-o flashlight with a 2 HDD motor rotors as a heatsink :wave: Runs on 3 alkaline batteries (FAIL) its consuming 222 ma and the voltage drops ALOT. must get lithium Link to laser ! http://www.ebay.com/itm/High-Power-250mW-Focusable-Laser-Module-Battery-Case-/231175789434 Post a comment of what You think of my homemade laser
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