[34S] battery warning indicator / question

[Bernd Grubert]

(04-01-2015 04:15 PM)Marcus von Cube Wrote:  Whenever a computation takes longer than a fraction of a second, the speed is increased (in two steps) up to the maximum speed of some 30 MHz. As a rule of thumb you can assume 1mA/MHz.

Thanks for the information. I also found some values in this thread.
Here is a capacitor with 1.5F: EDLSG155V5R5C which would fit into the calculator, if I cut out the inner cover. I think the biggest problem is not the capacity but the internal resistance of the capacitor. It is 30 Ohm which causes in a voltage drop of 0.3V @ 10mA.

@Marcus: Do you know the voltage threshhold at which the calculator resets?

Regards
Bernd