Not sure how you'd go about it easily, as IR LEDs do have forward current limitations that can lower their life if exceeded.
If you need more IR why not install an outboard IR emitter?
They can be had in various sizes, watts, coverage angle and projected distance.
I've run most of mine at 100% and I've never had that fail on any. Have had various other things fail (IR filters, POE power side, etc.) so I'd kind of expect something else would be more likely to take it down before the IR died.
Not sure how you'd go about it easily, as IR LEDs do have forward current limitations that can lower their life if exceeded.
If you need more IR why not install an outboard IR emitter?
They can be had in various sizes, watts, coverage angle and projected distance.
Well, how would you detect the default "fail"? Because LED lifetime is often specified as the time it takes to drop to 70% brightness. Will you notice?
The other electronics in the device will fail long before the LEDs grow dim.
This is why the LED bulbs I buy for my home's lighting fixtures that are rated for some absurd length of time (20 years lets say) stop working after about 18 months.