Hi Blord,
I had purchased a 2.4+ Watt 445nm laser in 501B casing with G2 lens and the bigger 9mm diode with two 18350 batteries a few years back. I'm having issues with my laser, it doesn't seem as powerful anymore. At first I thought it was a battery problem but the new batteries I purchased didn't do the trick. Is there anything you can do about this? Thank you!