Zivan Problem

I have a 2002 Gem new Trojans 5 months old all of a sudden my charger goes from red to flashing red to yellow and stays there for hours and then it trips my outlet and never turns green??? but fan comes on and after it trips it says 100% any suggestions??:confused:

Recheck all connections for bright and tight.

Rechecked all connections batteries all working charger doesnโ€™t even come on anymore time for a new one wow this cart has cost me a fortune so far I miss my Gas Yamaha,lol