Single AA battery to light WHITE LED for long-long time

[Groundloop]

@zon,

When you load a battery it will increase in voltage because the internal resistance is
going down a bit. Then the voltage will start to fall again. Do a test, connect a 10 Watt
light bulb to a 12 volt battery. Measure the voltage and see for yourself. First the voltage
climbs because of the load is generating a small heat inside the battery thus lowering
the internal resistance. After a while the charge is going down and the voltage drops.

Nice circuit by the way! 

Groundloop.

[Koen1]

heat lowering resistance?

[Groundloop]

heat lowering resistance?

@Koen1,

If you have a better explaination, please share. 

Groundloop.

[Koen1]

No, but I was just wondering what mechanism is at work there
if it is really the case that the temporary increase in temperature
decreases the resistance,
because in general temperature increase leads to increased resistance.
I know that this temperature dependant behaviour can be very different
in electrolytes, but I have no specific info about that mechanism nor
about a negative temperature coefficient for resistance of the electrolytes
used in rechargeable batteries.
Do you?

[Groundloop]

@Koen1,

Only by observation. I have noticed that batteries goes up in voltage when loaded.
Then after some time the voltage drops again. I have seen this numerous times.
This effect has fooled many free energy researchers to believe there is o/u at play.

Think about it, a lead acid battery has a much higher charge output when warm than cold.

Groundloop.