Yes, I use Maxamps 6s 3250mah batteries. With 6s the current is low and it does not take as much punch. My batteries never get over 100F. I always get a solid 15min race level performance out of this system. I change my batteries every 15min. Keep in mind the heats are only 5min. If you run larger batteries, you are just caring around extra wight. The car actually corners and performs better.
8ight-e 2.0 Tekin RX8, Tekin 1350kv motor, Losi 5s 4000mah, 45/15gear
8ightT-e 2.0 Tekin RX8, Tekin 1350kv motor, Losi 5s 4000mah, 50/14gear CarSports.com - RC Car setup website