batt light issue

I have 89buick Century custom cpe had it out on the highway last night and the Batt light started to flash intermittintly. after a little while it calmed down. had it out running around today and no problem. what should I check besides the battery terminals?

Get a gauge on that thing and make sure the ALT is charging while running, 13.5 to 14.3 volts. If not, you're in for a breakdown.

Check all connections at the battery and alternator for tightness and free from corrosion.

Also the connections at the starter.......your main pos cable and bat feed line to the alternator, are located there....

Dude i think Your battery is defective, probably a dead cell.I guess its a one in a 2000 thing. I should contact Halo customer service, I am sure they make it right.Hope after contact the service center your problem would be solved..