The ones in the picture are gens ace cheapo packs. They get the job done and are cheap but ehh they are ok. But I run all max amps now and could not be happier. Max amps have crazy power. They are a little pricey but trust u get what u pay for in these. I have tried a ton of batteries. Many compare to max amps and are cheaper. But just get them. U will see

At Mooloola, Sunshine coast north of Brisbane QLD and that is a skate board track in the back ground

its in south eastern pa....lancaster ..google xrc raceway...its fun, we change it up every year. $5 for practice for all day...night races also!