The track doesn't have a pit lane yet so the races are all 5 minutes - which works out great for me! I can get 10-12 minutes at race pace on my setup at other tracks...very frustrating to be in the top three only to run out of battery in a 15 minute main...I'm using two TrakPower 4900's (4s), love the packs, I just wish they made 6000's. When Pit Lane goes in the races will be 15 minutes long...we will see just how efficient the Neu 1515/1y is next weekend.