This may come across as a rather nonsensical question however I think it is worth asking simply to understand what happened.
I plugged in an electric car battery directly to a wall socket, almost immediately there was a significant explosion in the wall socket. There was a power shut down in the entire house.
The battery was fully charged, and I was not using the cable to charge the battery, I was using the cable that is utilized for distributing power.
Basically, I pit the battery own power against the wall socket.
To make a simpler analogy, imagine an external portable battery, the ones that are used for charging electronic devices. The cable has two ends, one that is utilized for charging the battery. Then you invert the side of the cable to charge the device.
Same reasoning happened with the car battery, rather than plugging the battery to charge in the wall socket. (because it was fully charged) I plugged in the other side that distributes power. Then, there was an explosion and a shut down. why?