Hi Have any of you had problems with battery failing after charging? Car was standing for several months re the first COVID time . But I did take it out every weekend or ran it and it started every time. 6 months on and after two visits to dealership who said battery needs a good charge run it for a good 50 miles . Well it’s now failing , I charge it and it’s slow to turn over. Car can’t be looked at untill 9 sepember its out of warrenty can I change the battery?…… without going to my garage.? Any advice would be brill. Thanks