I would like to calculate how long an LED will stay lit given a specific power source. I need to know what the smallest battery I can use in a project and still get n hours of operation.
For example: if I have a typical LED and a 1.4v battery 130mah (hearing aid battery), how long will it stay lit to the point where you can't visually determine it's dimming..
What is the formula?
Also, does a flashing LED consume a non-linear amount of power? In other words, if I had an led that was on 50% of the time, could I double the duration value from the above said formula?
As you can tell, I don't really know anything. I just have an idea for something and am trying to determine how feasible it is...
Thanks for any help! Steve