Here's mine as it is now. I can read/flash 97+ LS1, E40 LS2, LB7, LLY, P12, 5 speed and 6 speed Allison. I plan to add a connector for T42 and one or both of the other LS2 ECMs. Battery is a 7.2Ah sealed battery, which is in the larger box on the bottom. There is a jack on the side of the smaller box to connect a maintainer up to keep the battery fully charged.