I've had 4 out of 4 "Power2000" batteries fail over the last week - 3 6000 mAh and 1 7000 mAh. They all did the same thing - upon removal from the 722 (all on the first removal), the battery contacts broke off the batteries, leaving them useless. It appears the solder connecting the contacts to the battery cells broke. I've been using the stock battery that came with the 722 with no problems. I am VERY frustrated with this and was wondering if others have experienced similar problems.
What high-capacity batteries have people been using other than the "Power2000"?