[Lyle O]

Put a charger on it overnight (a good one made for AGM batteries), and, assuming it comes up to 13 volts or so by the next day, it should start if it’s a battery voltage issue. As soon as you get it started, though, take it to Advance Autoparts (or someone similar) and they will come out with a great instrument and check your entire charging sytem for free and tell you if it’s the battery or alternator. Very accurate and reliable. No guesswork; either the battery won’t take a charge, or the alternator won’t send juice to it. Start there. If they both check out OK, you either have a ground issue, or wire connection issue causing the intermittences. My $.02.