Hi,
I can't follow your calculations:
(I didn't check if your initial values are correct)
22mA in 1 second then how much current in 1 uS..??
Maybe it's easier with a LED.
A LED consumes 20mA. In one second, in one hour in one year...and in one us. 20mA when it is ON.
But in your case it is ON only 100us in 100ms. This is 0.001. (No unit, because it is "second/second")
So the average current is 20mA x 0.001 = 0.020mA. (Average ON time current)
If now the LED cosumes 1mA (dim) during OFF time then
The average OFF time current is 1mAx 0.999 = 0.999mA.
The total average current is 0.999mA + 0.020mA = 1.019mA
22mA X1uS=1S x Required current
Therefore, Required current=(22x10^-3)x(10^-6)/1=220x(10^-9)=220nA
The idea is wrong. And the calculation is wrong, too.
(You could calculate charge per us: 22mA x 1us = 22nAs)
220nAX3600=792000X10^-9=0.79mA
22nAs x 3600s/h = 792nAh = 0.792uAh per hour,
For 8 hours=0.79mAx8=1896mA
The calculation is wrong.
0.792uAh x 8 = 6.3336uAh is about 6.3uAh (per 8 hours)
For 300 days=1896mAX300=568800mAH
0.792uAh x 24 × 300 = 5790uAh = 5.7mAh
Klaus