Where is the authoritative source that gives an AA alkaline cell a capacity of approximately 2800mAh with a 1mA constant load? What did Freescale use for a cutoff voltage? This is the value predicted by the Freescale battery life calculation tool. A competitor's tool gives AA capacity as 2850mA.
I have read the Energizer and Duracell technical manuals and they do not give battery life or capacity for a 1mA constant load.
The charts start at 10mA load.
Hello,
For an AA alkaline cell, a load of 10mA would be considered a light load - it is with much heaver loads that the capacity would begin to reduce appreciably. For a primary cell, such as an alkaline type, the unit to unit variation of capacity would probably be subject to a wide tolerance, so the difference between 2800 and 2850 mAh would be negligible.
For a 1mA constant current load, I suggest that you use the manufacturer's discharge period for a 10mA load, and simply multiply by 10. The number of hours would then represent the mAh capacity to the particular discharge voltage that you require.
Regards,
Mac