Amazon.com: Galaxy S6 Battery, [3280mAh] High Capacity Li-Polymer EB-BG920ABE Replacement Battery for Samsung Galaxy S6 All G920 Model with Repair Replacement Tools Kit and Instruction (Not for S6 Edge/Active) : Cell Phones
Samsung Galaxy S6 Active to feature much bigger battery
Rumor: Galaxy S6 Active to include microSD slot and bigger battery