li-ion+heat+speed=killed run time/HEAT

[danlat]

i am running an xmod with two lithium ion 3.6v/650mah, stage two/11tooth motor and awd in my skyline. my car can break traction on all 4 tires, brushed concrete and asphalt. the power is incredible but the lithiums and the esc (board) are getting really hot!!!! but the motor temp. is normal (98F.or so) do i need to upgrade fet's or do i have defective batteries? the batteries i am using are maxell 7.2v digital camera battery (split) and i am using a digipower rapid digital camera charger. all bought at best buy. the car runs about 10 minutes and until it cools then i am off running again. how do i cool it down? other than that i love the performance.