HI, I have a 535 diesel E61 2005 model and the battery was totally discharged due to a trailer wiring electrical fault. It took about 25 minutes to get enough charge into the battery (jump starting the car) to start the car and it now runs very rough, not idling, revs dropping off and stalling all the time unless under power (when it runs as per usual),... it’s like a fuel blockage. I was thinking the battery needs a full charge as there might be not enough power in the battery to fully run the fuel pump etc, could this be right or is it likely to be more serious? Any ideas please?