My LEDs

That's a lot of good theory. And I wouldn't disagree. But do you have test data on the LEDs in question that would support your assertion? After all... you and I have always prefered test data to theory, haven't we. I hope you're not just biased by your experiences with early generation LEDs.

:)

bigfootford wrote:

KendallP wrote:

bigfootford wrote:
Guess someone could load up their batteries and get the battery voltage down into the low 12's then remove the load and see if the cheaper led's dim and brighten...The regulated led's do not change brightness with battery voltage.
Mena has already agreed to do this. Where ya' been??? :)

Repeated pushing will greatly reduce reliability/life expectancy.
That's kind of a bold statement. Are you positive that it will "greatly reduce reliability/life expectancy?" Link, please??? ;)

Glad Menna's going to test. Did not catch that fact.

As for excessive current:

Hundreds of links!


http://www.theledlight.com/technical1.html
LED Technical Specifications and Application Notes
Therefore, a light-emitting diode (LED) is ... is characterized by the degradation of LED ... exceeding the maximum current rating will produce excessive heat within the LED ...



http://leds-led-drivers.com/Engineering-Services/reliability-of-leds.cfm

Current Conditions Of LEDs

Because lattice defects increase with use, the luminous intensity of LEDs gradually declines. The speed of accumulation of lattice defects depends on the magnitude of the forward current.

Jim