So basically, my car all of a sudden had the battery light start popping up. The battery wouldn’t be any more dead in between turning the car off and starting it up again. But after starting it up and driving, electronics will start turning off, cluster lights pop up randomly, and cylinders start misfiring and/or detonating, eventually getting to the point to where it’s undriveable. brand new battery and rebuilt oem Nissan alternator (both tested). I’m thinking possibly a slipping belt or a weak ground link, but i honestly have no direct leads to anything.

Parasitic drain check?
Starter harness?