@Acido @Simeon, let me clear this up for you. First off, @Scepterr didnt buy this from TB. I dont think Dex is selling these, and I’m not sure if he plans to. These PCB kits are being sold by @DerelictRobot.
As for those series connections, @Simeon is correct that the copper pour on the PCB should not be used to carry the full current of the battery. That is a no-no. For a better idea of a proper method, check out the build guide for these PCB kits that some enterprising duck put together: