If I connect 2 - 1.5V AA batteries in parallel, I know the voltage is cumulative. I now have a 3V power source, but what happens to the capacity of the two batteries together? The technical sheet gives me a capacity of about 2800 mAh at a discharge of 25mA for 1 of the batteries alone. In parallel, will I still have the same capacity of 2800 mAh even though I have 2 batteries?
Sorry for the long title. I have a Lenovo Thinkpad T430s with an Ultrabay battery and a main one. When I plug in the two batteries, it will start draining my Ultrabay battery until it drops all the way down to 0% until switching to the main battery. However, I want to keep the discharge within reasonable limits - 10~15% of capacity - before switching to the main battery.