Trying to figure out if I need a battery or alternator. Now I took the advice from the forum and changed both battery terminals and it was a heck of a job, got a refurbished battery AGM 1 year old , then after about 2 weeks battery light comes on after driving, shut engine off re-start engine light off, turn on radio still fine. Next day which is today Sunday no light, drive to store about 3 miles light comes on. Run the "test" it shows these. Sure can use some more of the great advise from this forum you guys have not let me down at all. Thanks

Re-start after light came on

While driving

At a stop light engine still running

Continue driving now the volts are lower than first 2 .