I haven't had a good experience yet. Been to the track twice and both times had to charge the battery to load up to go home. Was low enough it would only click the starter. First time only made 3 passes. Second time only 2 passes. Each time I had a few starts to set timing first time and to set launch control rpm after changing carbs the second time. The second time the battery had been on the charger all night and was not fully discharged before charging. I only have a 355 sbc roller motor so it shouldn't be a huge job to start it. Doesn't crank long and starts easily. Also did not have problems with this setup with a 12 volt battery. I had been led to believe that charging between rounds would not be necessary. Anybody else had less than spectacular results?