Is there a general rule for that? I mean, of course there is a maximum current, but what happens at or after that?
Will the life be halved when you run it at maximum current, or will it decrease by let's say 10%?
What happens when you exceed maximum current?
Yes, you will kill it eventually of course, just wondering, "maximum current" by itself doesn't tell you a lot...
Here's where it gets complicated :-) It totally depends on how / where it was made, and you will probably
never know for sure. If it's a poor die, at MAX current, it may reduce brightness 20-30% a year or more.
Even at TYP current, it may reduce 10% a year, which is considered "the higher end". A GOOD doping, may only
lose 1% a year max. So just ask yourself, how long do you want it to last (HRS running).
If you run them at 200-300% Max+, then all the curves rise exponentially. IF you really want to know, why not set
up a precise LED -> LDR test jig. Feed say 300%max Constant current into the LED, Note the initial LDR voltage,
wait until the LED is up to Temp, then make a 2nd Note: , then check it every day.