I bought the car not long ago and the battery light was on, when I bought the car the bloke said that he has put a new 110 battery on rather than the 100, when driving the car few days later all electrics cut off e.g windows radio, all dash, window wipers and sat nav. I found out that the alt was overcharging the bat so electrics cut off for safety, I changed the alt and still have the same problem, had battery checked and its only holding 47% but completely died today, could this possibly be the battery causing all this chew and why is the alt still reading that its overcharging? any help id be very grateful!