I use 2000 milli, I have battery LO set at 3.78 and battery high set at 5.50
I only get about 5 minutes low battery warning before it dies, which is the way I like it, If you set it to high it beeps forever which drives me crazy.
I'm running 2400mAH units in the Pro-96 and have it set for 4.63V Hi and 4.23V Lo.
This gives me a few minutes to find the charger and get it going. (Of course if I'm locked on an ID it's no help as it re-boots when I plug the charger in!)
Bests it just beeping once and going deader-than-Elvis though...