THE PRIMARY FUNCTION OF YOUR BATTERY IS TO TURN YOUR STARTER. REMOVE THE STARTER AND TAKE IT TO AUTOZONE, OR ANY PARTS PLACE. THEY WILL TEST IT FOR FREE! NOTE: DID YOU CK YOUR FUSES? MIGHT DO THAT BEFOR REMOVEING THE STARTER, HOWEVER IT SOUNDS LIKE A STARTER PROB
ALSO VERIFY YOUR CABLE CONNECTIONS ARE CLEAN AND CORRECTALLY CONNECTED, BOTH ENDS. DONT NEGELECT TO CK THE FUSE LINK IN THE POS BATTERY CABLE APROX A FOOT FROM THE BATTERY. THE LITTLB PLASTIC BOX IS NOT SEALED AND IS FANTASTIC AT COLLECTING WATER, THUS CORRODING AND MAKEING TO HIGH A RESTIANCE TO YOUR STARTER.
HOPE THIS HELPS