Samsung Galaxy Note II gets a 6400mAh battery
"The 3100mAh battery unit of the Samsung Galaxy Note II already propelled it to an impressive endurance rating in our battery test. I do however, reckon that there might be some users out there who would appreciate some extra juice at their disposal – just in case they need to jump start their car in a cold winter morning. Mugen Power’s humongous 6400mAh battery is aiming at those Galaxy Note II owners".
For more info read :
Article at GSMArena
Battery info at Mugen Power