about AA or LR6

i used to believe that the battery capacity is not been near entirely used (by random application) so i  a bit "wasted my time" on studding 'em // -- as in fact it turns out the battery keeps it's output "Up" for up to 90% of it's capacity

the processes present at exploitation (not discussed further in this article - just listed)::

0) internal electro mechanics and electrical field set up by load current and env. temperature
1) reduction of the chemistry induced charge
2) chemistry change by discharge
3) re-inducing the charge by present chemistry

i made the series of simple discharge v. time tests
the values for internal resistance and electro-motoric force are derived theoretically⁽¹⁾

notice! that the experiment recorded just terminal voltage and current levels -- everything else is derived

the legend explained::

C836mAh(%) -- the percentage of "full capacity" -- 836mAh in this case
iC -- 1 (100%) minus C836mAh(%)
E -- electro-motoric force in volts
r20Ω(%) -- internal resistance / 20Ω
Iest(A) -- estimated terminal current in amperes
P(W) --U x I -- external- / diffusing power
Csimple(%) -- R.const C battery alternate (as using capacitor + delimiting resistor inplace of an alkaline)

about the error of the used theoretical model⁽¹⁾

i speculate that the master fluctuations are due error in device redings -- whatever the case it's not so significant

the E(r) or r(E) dependency⁽¹⁾ is defined from measuring multiple AA cells at their various discharge levels

notice! that there's no time dependency defined

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