If running out of battery life on your new Samsung Galaxy Note II has got you down in the dumps, then here's an accessory that might perk you up. Mugen Power is now offering a 6400 mAh extended battery for the GNote2. It will be available for shipping on December 21st and costs $98.85. No specific times were given on how much longer this beast should last, but they guesstimated 2.06 times longer. Obviously, a battery of this size will add considerable bulk to the phone, but for many users, that is a small price to pay for twice the usage time. Here's a link for you guys.