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So I bought a DIY 100mW 532nm Green Laser Module from lazerer, and the package arrived yesterday. So I hooked it up to a 18650 battery and turned it on to test it.... and it works, but not at 100mw... It looks like it is <5mw. 
Am I missing something with the set up or is it just a dud? Reading through lazerer reviews here makes me think it was a bad idea to buy from them... should have searched it before buying...
Am I missing something with the set up or is it just a dud? Reading through lazerer reviews here makes me think it was a bad idea to buy from them... should have searched it before buying...