HI My wifes nissan micra profile suffered a flat battery 2 days ago due to the fog lights being left on. I removed the battery and charged it for approximately 8 hours. When I replaced the battery the next day and tried the ignition I heard at first a cracklimg sound then nothing then the starter motor but the engine will not turn over. I can switch on the lights but there is no other life from the dashboard, even the NATS light is dead,