Just got my extended battery today. I plan to make the extended my daily driver and have the standard battery as backup. A) Do I recalibrate to the extended battery or the standard? B) Should I calibrate both and keep a batterystats.bin copy for each, then copy it over if in have to switch batteries? C) I've also read the system generates a new batterystats.bin when you unplug after a 100% charge. If this is true, does anyone really need to calibrate their battery? Survivor of the Great 2011 Verizon Google Samsung Galaxy Nexus Prime Debacle and proud owner of a Galaxy Nexus and Original Droid 1/Milestone. Sent from my Sexy Lexus Galaxy Nexus.