Need help with a 900 lumen LED that has been damaged

Greenmando

Newly Enlightened
Joined
May 8, 2011
Messages
5
Location
Columbia, CA and Bellflower, CA
I had bought a 900 lumen off ebay from China. Brand is a Trustfire, uses one 18650 cell. The light really impressed me. Left it on my tool box at work when I returned later and used it the light was diminished to that like my 80 lumens have. In examing it the cell had been removed and replaced north to south. It still works but not as bright as it once was. Has the led been damaged or is this a driver issue? I like this light as it is just on/off and has a bracket to mount on my Picatinny rail with a touch switch.
 
Top