Maybe someone can clarify for me... I've read a lot about maintaining proper battery stats, calibrating with charge cycles, etc. I used to do it all the time on my rooted D1. Most people will agree that they see better battery life after clearing the stats and a few charge cycles. My question is, with everyone talking about the extended battery, or the external battery charger, how does it affect phone performance when you take a battery out and replace it with another? It would seem to me that if you were to calibrate a battery, pull a dead one out then put in a second, full battery that it would affect the stats somehow? What about the difference between swapping between a stock batt and an extended batt with different capacities?