The self automatic charger on my mitsubishi outlander stopped working properly. For example I noticed that it was charging only 50%. I took the timer off and it began charging fully. More recently I noticed that one of the charger plug pins was burnt. The fuse case of the plug was also slightly burnt. I would like to change this part of the charger but the plug is moulded to the wire. What is the best strategy to solve this problem. I am currently not using the charger. I have attached pictures.