So i read through the data sheet and understood maybe 10% of it!!
Basically, from what i understand, i can run a 12v current from the battery then split it in two, one half running through a regulator bringing it down to 5v to feed the chip and the other half running to the chips input (after running it through a series of resistors to bring it down in voltage). the 5v to the chip with stay constant and create an internal voltage reference to compare to the current coming from the battery. as the current drops, the chip with detect the change and "interrupt" the program when it hits a set voltage difference?
am i close?