I got 95 civic that is put away for the winter. the first day i put it a way i send my alarm and didnt go up and start it for like 2 weeks and it was dead. SO i jumped it and it started let it run for like 5 mins shut it off try start it again and it wouldnt start so I jumped it and let it run for like 15mins and sshut it off and it started right up. So I left and went back up 2 weeks later wouldnt start and the alarm wasnt set this time and still wouldnt start so I took it to Autozone have it test the battery they told me it is testing around 10.9 and he said it was good so he charged it fully for me and now I put it back on 3 weeks later i go back up there and it wont start what can this be ?