1. Clean the terminals. Be sure to have your radio "code" if you disconnect the battery.

2. If you can live with it, get a battery tender to hook up for a week. It seemed to help an old battery here and I got another year out of it.

3. If the battery is 5 or more years, I'd give the nod to the battery again. Be sure to use a Volt meter in the AM before starting to see if it's coming in low.