[HELP] Sci-fi Laser 2.4 mw

Hello dears,

Is my first time here in the group, I'm from Brazil and I would like your help with my laser bought from Sci-Fi lasers (501B 2.4mw) 3/4 years ago.

Recently I loaned it to my uncle and I can imagine he reversed the batteries and my laser died. Now, when I put the batteries and turn it on, the light is too weak. :undecided:

There is anything I can do at this moment? Should I replace the diode or buy a new one from another company? (Specifically Sanwu)

I really faced a lot of problems to receive this laser when I purchased them, our brazilian authorities is a sh*t and very strict to import laser products, I had lucky to get it through...

I count on your help guys!

Roger.