Thats def hot for the battery! I've come close to that in an E-REVO but that has the batteries closed up with little airflow. You should consider gearing a little lower and/or getting some more air to your batteries.
Hey guys, you think 130 degrees is to warm after 15minutes of hard running? The ambient air temp was 93-94 degrees. I will try gearing down a little and see what happens. Thanks for the feedback.