any suggestions for a dodgy Giant Suede Charger

I have a Giant Suede and do have problems with the charger it is still under warranty but has already been replaced

since discovering this site I understand they are dodgy but not if my problems are universal

origanally it blew up twice and now just sometimes it will do a full charge and sometimes it wont sometimes it just runs for 30 mins or an hour and i know it cant of charged difficult to take it back as fault is intermittent

any advice appreciated

The chargers are poor I agree.

Best thing to look for if you don't feel like argueing at the originating store is a 36v NiMh charger from elsewhere. I can't find where I bought my replacement sorry.