Starts fine with a boost,ok for a couple days. Then same prob all over again. Changed battery terminals was ok for awhile. Going to check ground on engine and live wire to starter for corossion. Was told by dealer it was charging ok,will also check that again. Car is being used on short runs only. Will also take battery out and give it a good charge. Confused but never give up LOL. Any other ideas or known probs would be appreciated !