Jim,
I routinely fly with a 250 or 370 on their own. I use 45 to 55mAh per P flight.
I have my eye on a 160mAh right now - for comp flights.
This is for a big bi-plane to make weight.
I will be doing this and testing with recharging frequencies, ie; after 1 flight,2 flights,3 flights etc.
Hugs and kisses !!

Brian