Anyone researched Telsa's 7kW battery?

Those battery packs have a raft of sensors and harness to be plugged into a lithium ion battery charger management control unit.

It's not just to limite current or voltage. It's to safety ISOLATE cells that may overheat before they start melting stuff like steel and humans. Ask Boeing about lithium battery monitoring and control.

So a person buys a multi-thousand dollar battery pack. It comes with a huge harness socket to all the sensors. Ahhh Jeez. Watcha gonna dew about the plug side? A control unit has to be custom configured for a specific battery pack. More Tesla gear? Ooooooo this ain't gonna be cheap!