I have a 1988 Jeep Wagoneer. Replaced the battery about 2 months ago, was running fine though it took ~5 seconds for it to turnover (was running like that well before battery was replaced). A few days ago I left the lights on and the battery died. I got it jumped and made it home (~15min away) just fine. The next morning it was dead again. That afternoon I jumped it again and let it run for ~5-10min. Then I tried to start it on its own and it did just fine. Now the next morning its dead again. I was thinking the battery wasn't bad, but now I'm thinking maybe the alternator? Any help would be appreciated. Thanks!